Question

What deceleration must she have ?
31. Draw a velocity-time graph to show the following motion :
A car accelerates uniformly from rest for 5 s; then it travels at a steady velocity for 5 s.
32. The velocity-time graph for part of a train journey is a horizontal straight line. What does this tell you about
(a) the train's velocity, and (b) about its acceleration ?
ong Answer Type Questions
33. (a) Explain the meaning of the following equation of motion :
v=u + at
where symbols have their usual meanings.
(b) A body starting from rest travels with uniform acceleration. If it travels 100 m in 5 s, what is the value of
acceleration ?
34. (a) Derive the formula : y = u + at, where the symbols have usual meanings.
(b) A bus was moving with a speed of 54 km/h. On applying brakes it stopped in 8 seconds. Calculate the
acceleration
35. (a) Derive the formula : S = ut + 5 at2, where the symbols have usual meanings.
(b) A train starting from stationary position and moving with uniform acceleration attains a speed of 36 km
per
hour in 10 minutes. Find its acceleration.
Write the three equations of uniformly accelerated motion. Give the meaning of each symbol which








solve these three questions plz ​

Answer 1

31.Initially the car moves under acceleration for 5 sec. So, the velocity-time graph has a slope in first 5 sec and then it moves at a constant speed. So, the curve will be a straight line parallel to time axis where the value of speed does not change.



33 (a) v=final velocity

u=initial velocity

a acceleration

t time

(b) s=ut+1/2at^2

8m/s^2

Answer 2

Answer:

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