Question

WY
18. Write the formula to calculate the speed of a body moving along a circular path. Give the meaning of each
symbol which occurs in it.
19. Explain why, the motion of a body which is moving with constant speed in a circular path is said to be
accelerated.
20. What is the difference between uniform linear motion and uniform circular motion ? Explain with examples.
21. State an important characteristic of uniform circular motion. Name the force which brings about uniform
circular motion.
22. Find the initial velocity of a car which is stopped in 10 seconds by applying brakes. The retardation due to
brakes is 2.5 m/s2.
Describe the motion of a body which is accelerating at a constant rate of 10 m s2. If the body starts from rest,
how much distance will it cover in 2 s?
24) A motorcycle moving with a speed of 5 m/s is subjected to an acceleration of 0.2 m/s2. Calculate the speed of
the motorcycle after 10 seconds, and the distance travelled in this time.
25) A bus running at a speed of 18 km/h is stopped in 2.5 seconds by applying brakes. Calculate the retardatio
produced
26) A train starting from rest moves with a uniform acceleration of 0.2 m/s2 for 5 minutes. Calculate the spe
acquired and the distance travelled in this time.
7. Name the two quantities, the slope of whose graph gives :
(a) speed, and
(b) acceleration
3.) A cheetah starts from rest, and accelerates at 2 m/s2 for 10 seconds. Calculate :
(a) the final velocity
(b) the distance travelled.
A train travelling at 20 m s-accelerates at 0.5 m s2 for 30 s. How far will it travel in this time?
A cyclist is travelling at 15 m sl. She applies brakes so that she does not collide with a wall 18 m
What deceleration must she have ?​

Answer 1

Answer:

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