Question

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 travelling at 54 km/h is slow down to 36 km/h in 10 sec. Find the retardation
Question 4
A particle is moving in a circle of diameter 20 m. What is its distance and as per the table given below
Rounds Displacement Distance
1
1.5
2
2.5
Question 5
A scooter travelling at 10 m/s speed up to 20 m/s in 4 sec. Find the acceleration of scooter.
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
A car starts from rest and acquires 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.​

Answer 1

Answer:

Find a) Accelaration b) The distance travelled by a car​ Acceleration a = (v - u)/t = (15 - 10)/10 = 5/10 = 0.5 m/s2.

Explanation: