When a body undergoes changes in equal velocity in equal intervals of time, then the body is said to be in _________.
Uniform acceleration
Positive acceleration
Uniform speed
Positive speed
A particle is pushed along a horizontal surface in such a way that it starts with a velocity of 12m/s and decreases at the rate of 0.5 m/s2. The time it will take to come to rest is:
42s
24s
48s
84s
A bus travels a distance with a speed of 50km/ hr and returns with a speed of 40 km/hr. Find the average speed of the whole journey.
44.4m/s
44.4km/hr
45km/hr
45m/s
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 particle moving with an initial velocity of 5 m/s is subjected to a uniform acceleration of -2.5m/s-2. The displacement in the next 4 seconds is
40m
0
20m
60m
Rate of decrease in speed is ___________.
Acceleration
Retardation
Positive Speed
Negative speed
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
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
The unit of acceleration is __________.
ms-1
ms-2
ms
km/m
A car starts from rest and moves with uniform acceleration of 0.6m /sec2 for 5 minutes. Calculate the velocity required by the car.
3 m/s
3 m/s2
180m/s
180 m/s2
