M1 Question help!

#1
I tried this question, but I don't know whether I got it right:

A particle is moving in a straight line. The particle starts with speed 5m/s and accelerates at a constant rate of 2m/s for 8 seconds. It then decelerates at a constant rate coming to rest in a further 12 second.
a. sketch a speed time graph illustrating the motion of the particle.
b. find the total distance moved by the particle during its 20 seconds of motion
c. sketch a distance time graph of the motion of the particle.

for a I worked out v, using v = u+at, getting 21, then on the graph I drew a line from 5 to 21 which was for 8 seconds, then from the end of that line I drew a line that went down to 20 seconds.
for b, I worked out the area under the graph and got 152m.
0
7 years ago
#2
Yes it seems correct
0
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