Question

15 numerical's on motion

Answer 1

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Answer 2

Question 1
A train accelerates from 36 km/h to 54 km/h in 10 sec. 
(i) Acceleration 
(ii) The distance travelled by car
Question 2
A body whose speed is constant
(a) Must be accelerated
(b) Might be accelerated
(c) Has a constant velocity
(d) Cannot be accelerated.
Question 3
A truck traveling at 54 km/h is slow down to 36 km/h in 10 sec. Find the retardation
Question 5
A scooter travelling at 10 m/s speed up to 20 m/s in 4 sec. Find the acceleration of train. 
Question 6 
A train starts from rest and accelerate uniformly at the rate of 5 m/s2 for 5 sec. Calculate the velocity of train in 5 sec. 
Question 7
A object moves with uniform positive acceleration. Its velocity-time graph will be 
(a) A straight line parallel to the time axis
(b) A straight line inclined at an obtuse angle to the time axis
(c) A straight line inclined at an acute angle to the time axis
(d) None of these.
Question 8
The maximum speed of a train is 90 km/h. It takes 10 hours to cover a distance of 500 km. Find the ratio of its average speed to maximum speed?
Question 9
9 A car start from rest and acquire a velocity of 54 km/h in 2 sec. Find
(i) the acceleration 
(ii) distance travelled by car assume motion of car is uniform?
Question 10
An object dropped from a cliff falls with a constant acceleration of 10 m/s2. Find its speed 5 s after it was dropped.
Question 11
11 A ball is thrown upwards and it goes to the height 100 m and comes down
1) What is the net displacement?
2) What is the net distance?