Advertisements
Advertisements
प्रश्न
From the diagram given below, calculate deceleration.

Advertisements
उत्तर

Deceleration = Slope of v.t. graph from A to B
= `"AC"/"CB"=15/(16-10)=15/6` = 2.5 ms−2
APPEARS IN
संबंधित प्रश्न
A ball is rolling from A to D on a flat and smooth surface. Its speed is 2 cm/s. On reaching B, it was pushed continuously up to C. On reaching D from C, its speed had become 4 cm/s. It took 2 seconds for it to go from B to C. What is the acceleration of the ball as it goes from B to C?

Draw velocity – time graph for the following situation:
When a body is moving with variable velocity and variable acceleration.
A cyclist driving at 5 ms−1, picks a velocity of 10 ms−1, over a distance of 50 m. Calculate
- acceleration
- time in which the cyclist picks up above velocity.
What is the SI unit of acceleration?
A body falls towards the earth. Does it have positive or negative acceleration?
A car traveling at 60 km/h, stops on applying brakes in 10 seconds. What is its acceleration?
A car accelerates to a velocity of 30 m/s in 10 s and then decelerates for 20 s so that it stops. Draw a velocity-time graph to represent the motion and find:
Distance travelled
Assertion: The accelerated motion of an object may be due to change in magnitude of velocity or direction or both of them.
Reason: Acceleration can be produced only by change in magnitude of the velocity. It does not depend the direction.
The slope of a velocity-time graph gives ______.
Acceleration is defined as the rate of change of ______.
