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प्रश्न
When is the acceleration due to gravity negative?
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उत्तर
If the body rises vertically upwards, then the value of acceleration due to gravity is negative.
संबंधित प्रश्न
State its value in C.G.S. as well as in S.I. system.
A motor bike running at 90 kmh−1 is slowed down to 18 kmh−1 in 2.5 s. Calculate
- acceleration
- distance covered during slow down.
Out of energy and acceleration, which one is a vector?
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:
The acceleration.
The rate of change of velocity is ______.
Exercise Problem.
A racing car has a uniform acceleration of 4 ms–2. What distance it covers in 10 s after the start?
The slope of a velocity-time graph gives ______.
The value of acceleration for a body at rest is ______.
Acceleration is a scalar.
