The velocity of a car at 10.50 am is 60km/h and at 10.52am it is 80km/h. Assuming constant acceleration in the given period its value is
600km/h2
500km/h2
400km/h2
300km/h2
Acceleration of an object is equal to
speed / time
velocity / time
change in velocity / time
change in speed/ time
The unit of acceleration is __________.
ms-1
ms-2
ms
km/m
A body starting from rest is travelling with an acceleration of 6 m/s2. Calculate the distance travelled by it in the 5th second.
75m
27m
30m
75m/s
A particle is travelling with a constant speed, This means that
its position remains constant as time passes
it covers equal distances in equal time intervals
its acceleration is zero
it does not change its direction of motion
A car starts from rest and moves with uniform acceleration of 0.3 m/sec2 for 5 minutes. Find the distance travelled by the car.
3. 75m
3.75km
13.5km
13.5m
A particle is pushed always on a horizontal surface in such a way that it starts with a velocity of 12 m/s and decreases at the rate of 0.5 m/s2. The time it will take to come to rest is
42s
48s
24s
84s
A body starting from rest travels a distance of 10m in 2 seconds. What is its acceleration?
5ms-2
5ms-1
5ms2
5m-2s
A car takes 20 seconds to stop after the brakes are applied. Find its initial velocity if the retardation due to brakes is 1.5ms-2.
30ms-1
-30ms-1
300ms-1
-300ms-1
The unit of velocity is
m2s
sm-1
