Advertisements
Advertisements
प्रश्न
The velocity-time graph for a uniformly retarded body is a straight line inclined to the time axis with an obtuse angle. How is retardation calculated from the velocity-time graph?
Advertisements
उत्तर
retardation is calculated by finding the negative slope.
APPEARS IN
संबंधित प्रश्न
When is the acceleration due to gravity negative?
A motorbike, initially at rest, picks up a velocity of 72 kmh−1 over a distance of 40 m. Calculate
- acceleration
- time in which it picks up above velocity.
An aeroplane lands at 216 kmh−1 and stops after covering a runway of 2 m. Calculate the acceleration and the time, in which it comes to rest.
A racing car, initially at rest, picks up a velocity of 180 kmh−1 in 4.5 s. Calculate
- acceleration
- distance covered by the car.
A body falls towards the earth. Does it have positive or negative acceleration?
Write the SI unit of acceleration and retardation.
The graph shows how the velocity of a scooter varies with time in 50 s.
Work out: Deceleration
Acceleration is defined as the rate of change of ______.
An object can be moving with uniform speed but with variable acceleration.
Assertion: A positive acceleration of a body can be associated with the slowing down of the body.
Reason: Acceleration is a vector.
