Advertisements
Advertisements
प्रश्न
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.
पर्याय
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If assertion is false but reason is true.
Advertisements
उत्तर
If assertion is true but reason is false.
APPEARS IN
संबंधित प्रश्न
If a body is moving with a constant velocity its acceleration is ______.
Draw velocity – time graph for the following situation:
When a body is moving with variable velocity, but uniform retardation.
A truck running at 90 kmh−1, is brought to rest over a distance of 25 m. Calculate the retardation and time for which brakes are applied.
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.
Can you use the relation [B1]?
The initial velocity of a car is 10 ms-1. It moves with an acceleration of 2 ms-2. What will be its speed after 10 seconds?
Sketch the shape of the velocity-time graph for a body moving with:
Uniform acceleration.
State whether true or false. If false, correct the statement.
Acceleration can get negative value also.
A car is being driven at a speed of 20ms-1 when brakes are applied to bring it to rest in 5 s. The deceleration produced in this case will be ______.
The value of acceleration for a body at rest is ______.
