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I'm struggling with these questions and i tried the SUVAT formulas that are appropriate to use. Can anyone help me?

1.

A particle, initially 15 m from the origin and travelling at -2 ms-1, accelerates at a constant rate and ends up -20 m from the origin and travelling at -5 ms-1.

What is its acceleration?

2.A train is timed between successive posts A, B and C, each 2000 m apart. It takes 100 seconds to travel from A to B and 150 seconds to travel from B to C. The acceleration throughout the journey is uniform.

What is the acceleration? Answer

ms-2

Find the velocity of the train at B. Answer

ms-1

(Give your answers as exact whole numbers or decimals or as fractions in their lowest terms in the form p/q).

3.A particle starts from rest and moves in a straight line with constant acceleration. In a certain 4 seconds of its motion it travels 12 m and in the next 5 seconds it travels 30 m.

What is the acceleration of the particle? Answer

ms-2

What is the velocity of the particle at the start of timing? Answer

ms-1

Find the distance it had travelled before timing started. Answer

m

(Give your answers as exact whole numbers or decimals, or as fractions in their lowest terms in the form p/q).

1.

A particle, initially 15 m from the origin and travelling at -2 ms-1, accelerates at a constant rate and ends up -20 m from the origin and travelling at -5 ms-1.

What is its acceleration?

2.A train is timed between successive posts A, B and C, each 2000 m apart. It takes 100 seconds to travel from A to B and 150 seconds to travel from B to C. The acceleration throughout the journey is uniform.

What is the acceleration? Answer

ms-2

Find the velocity of the train at B. Answer

ms-1

(Give your answers as exact whole numbers or decimals or as fractions in their lowest terms in the form p/q).

3.A particle starts from rest and moves in a straight line with constant acceleration. In a certain 4 seconds of its motion it travels 12 m and in the next 5 seconds it travels 30 m.

What is the acceleration of the particle? Answer

ms-2

What is the velocity of the particle at the start of timing? Answer

ms-1

Find the distance it had travelled before timing started. Answer

m

(Give your answers as exact whole numbers or decimals, or as fractions in their lowest terms in the form p/q).

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#2

(Original post by

I'm struggling with these questions and i tried the SUVAT formulas that are appropriate to use. Can anyone help me?

1.

A particle, initially 15 m from the origin and travelling at -2 ms-1, accelerates at a constant rate and ends up -20 m from the origin and travelling at -5 ms-1.

What is its acceleration?

**VEMMMM**)I'm struggling with these questions and i tried the SUVAT formulas that are appropriate to use. Can anyone help me?

1.

A particle, initially 15 m from the origin and travelling at -2 ms-1, accelerates at a constant rate and ends up -20 m from the origin and travelling at -5 ms-1.

What is its acceleration?

For each question look at the variables that you have, and select the relevant SUVAT equation. Here you have s, u and v, and want a. Which SUVAT equation has only those variables?

Last edited by RogerOxon; 7 months ago

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#3

(Original post by

I'm struggling with these questions and i tried the SUVAT formulas that are appropriate to use. Can anyone help me?

1.

A particle, initially 15 m from the origin and travelling at -2 ms-1, accelerates at a constant rate and ends up -20 m from the origin and travelling at -5 ms-1.

What is its acceleration?

2.A train is timed between successive posts A, B and C, each 2000 m apart. It takes 100 seconds to travel from A to B and 150 seconds to travel from B to C. The acceleration throughout the journey is uniform.

What is the acceleration? Answer

ms-2

Find the velocity of the train at B. Answer

ms-1

(Give your answers as exact whole numbers or decimals or as fractions in their lowest terms in the form p/q).

3.A particle starts from rest and moves in a straight line with constant acceleration. In a certain 4 seconds of its motion it travels 12 m and in the next 5 seconds it travels 30 m.

What is the acceleration of the particle? Answer

ms-2

What is the velocity of the particle at the start of timing? Answer

ms-1

Find the distance it had travelled before timing started. Answer

m

(Give your answers as exact whole numbers or decimals, or as fractions in their lowest terms in the form p/q).

**VEMMMM**)I'm struggling with these questions and i tried the SUVAT formulas that are appropriate to use. Can anyone help me?

1.

A particle, initially 15 m from the origin and travelling at -2 ms-1, accelerates at a constant rate and ends up -20 m from the origin and travelling at -5 ms-1.

What is its acceleration?

2.A train is timed between successive posts A, B and C, each 2000 m apart. It takes 100 seconds to travel from A to B and 150 seconds to travel from B to C. The acceleration throughout the journey is uniform.

What is the acceleration? Answer

ms-2

Find the velocity of the train at B. Answer

ms-1

(Give your answers as exact whole numbers or decimals or as fractions in their lowest terms in the form p/q).

3.A particle starts from rest and moves in a straight line with constant acceleration. In a certain 4 seconds of its motion it travels 12 m and in the next 5 seconds it travels 30 m.

What is the acceleration of the particle? Answer

ms-2

What is the velocity of the particle at the start of timing? Answer

ms-1

Find the distance it had travelled before timing started. Answer

m

(Give your answers as exact whole numbers or decimals, or as fractions in their lowest terms in the form p/q).

Take the 1st equation - which SUVAT equation are you using, and what values are you plugging into it?

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Orignally i used the equation V=U+AT so -20=15-7a

then i got 35=-7a

meaning a is 5 but intergal maths said the answer is wrong

This is where i am stuck cos i dont know what else to do

(sorry its probably wrong since i had to self isolte during the time we learnt this)

then i got 35=-7a

meaning a is 5 but intergal maths said the answer is wrong

This is where i am stuck cos i dont know what else to do

(sorry its probably wrong since i had to self isolte during the time we learnt this)

Last edited by VEMMMM; 7 months ago

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#5

(Original post by

Orignally i used the equation V=U+AT so -20=15-7a

then i got 35=-7a

meaning a is 5 but intergal maths said the answer is wrong

This is where i am stuck cos i dont know what else to do

(sorry its probably wrong since i had to self isolte during the time we learnt this)

**VEMMMM**)Orignally i used the equation V=U+AT so -20=15-7a

then i got 35=-7a

meaning a is 5 but intergal maths said the answer is wrong

This is where i am stuck cos i dont know what else to do

(sorry its probably wrong since i had to self isolte during the time we learnt this)

List the 4 terms in the question, then pick the suvat equation that relates them together.

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#6

**VEMMMM**)

Orignally i used the equation V=U+AT so -20=15-7a

then i got 35=-7a

meaning a is 5 but intergal maths said the answer is wrong

This is where i am stuck cos i dont know what else to do

(sorry its probably wrong since i had to self isolte during the time we learnt this)

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