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Hey,
Assessment question so no answers. Descriptive help is much appreciated as I lack brain cells.
A speeding van passes a police car. The van is travelling at 27ms^-1, and the police car is travelling at 15ms^-1. From the instant when the van is level with the police car, the police car accelerates uniformly at 3ms^-2 in order to catch the van. Work out
(a) the time taken until the police car is level with the van,
(b) the speed of the police car at this time.
Assessment question so no answers. Descriptive help is much appreciated as I lack brain cells.
A speeding van passes a police car. The van is travelling at 27ms^-1, and the police car is travelling at 15ms^-1. From the instant when the van is level with the police car, the police car accelerates uniformly at 3ms^-2 in order to catch the van. Work out
(a) the time taken until the police car is level with the van,
(b) the speed of the police car at this time.
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#2
(Original post by msar)
Hey,
Assessment question so no answers. Descriptive help is much appreciated as I lack brain cells.
A speeding van passes a police car. The van is travelling at 27ms^-1, and the police car is travelling at 15ms^-1. From the instant when the van is level with the police car, the police car accelerates uniformly at 3ms^-2 in order to catch the van. Work out
(a) the time taken until the police car is level with the van,
(b) the speed of the police car at this time.
Hey,
Assessment question so no answers. Descriptive help is much appreciated as I lack brain cells.
A speeding van passes a police car. The van is travelling at 27ms^-1, and the police car is travelling at 15ms^-1. From the instant when the van is level with the police car, the police car accelerates uniformly at 3ms^-2 in order to catch the van. Work out
(a) the time taken until the police car is level with the van,
(b) the speed of the police car at this time.
) and the displacement of the van (
) in terms of 
seconds after the van passes the police car.You are looking for the solution to
.Makes sense why?
Then the speed part should be straightforward.
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#3
(Original post by msar)
Hey,
Assessment question so no answers. Descriptive help is much appreciated as I lack brain cells.
A speeding van passes a police car. The van is travelling at 27ms^-1, and the police car is travelling at 15ms^-1. From the instant when the van is level with the police car, the police car accelerates uniformly at 3ms^-2 in order to catch the van. Work out
(a) the time taken until the police car is level with the van,
(b) the speed of the police car at this time.
Hey,
Assessment question so no answers. Descriptive help is much appreciated as I lack brain cells.
A speeding van passes a police car. The van is travelling at 27ms^-1, and the police car is travelling at 15ms^-1. From the instant when the van is level with the police car, the police car accelerates uniformly at 3ms^-2 in order to catch the van. Work out
(a) the time taken until the police car is level with the van,
(b) the speed of the police car at this time.
compare areas and solve for time, then part (b) is simple.
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#5
(Original post by msar)
Hey,
Assessment question so no answers. Descriptive help is much appreciated as I lack brain cells.
A speeding van passes a police car. The van is travelling at 27ms^-1, and the police car is travelling at 15ms^-1. From the instant when the van is level with the police car, the police car accelerates uniformly at 3ms^-2 in order to catch the van. Work out
(a) the time taken until the police car is level with the van,
(b) the speed of the police car at this time.
Hey,
Assessment question so no answers. Descriptive help is much appreciated as I lack brain cells.
A speeding van passes a police car. The van is travelling at 27ms^-1, and the police car is travelling at 15ms^-1. From the instant when the van is level with the police car, the police car accelerates uniformly at 3ms^-2 in order to catch the van. Work out
(a) the time taken until the police car is level with the van,
(b) the speed of the police car at this time.
For the van, u=27 and a=0?(since the speed is constant but i'm not sure).
For the police car, u=15 and a=3.
Then equating the displacements gives you t=8 and t=0.
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