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प्रश्न
When is the acceleration due to gravity positive?
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उत्तर
If a body falls towards the earth, then value of acceleration due to gravity is positive.
संबंधित प्रश्न
Give a scientific reason.
When an object falls freely to the ground, its acceleration is uniform.
State the type of motion represented by the following sketches in Figures.
Give an example of each type of motion.
A car travels with uniform velocity of 25 m s-1 for 5 s. The brakes are then applied and the car is uniformly retarded and comes to rest in further 10 s. Find:
- The distance which the car travels before the brakes are applied,
- Retardation and
- The distance travelled by car after applying the brakes.
State if the following situation is possible:
A body moving with constant acceleration but with Zero velocity.
Is it possible for an accelerating body to have constant speed?
A car is moving with a speed of 50 km/h. One second later, its speed is 55 km/h. What is its acceleration?
State whether true or false. If false, correct the statement.
Acceleration can get negative value also.
The slope of a velocity-time graph gives ______.
The acceleration of the body that moves with a uniform velocity will be ______.
What is the difference between uniform acceleration and non–uniform acceleration?
