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प्रश्न
When will you say a body is at uniform acceleration?
उत्तर
- A body is said to have uniform acceleration if it travels in a straight path in such a way that its velocity changes at a uniform rate.
- i.e., the velocity of a body increases or decreases by equal amounts in an equal interval of time.
संबंधित प्रश्न
A motorcycle moving with a speed of 5 m/s is subjected to an acceleration of 0.2 m/s2. Calculate the speed of the motorcycle after 10 seconds, and the distance travelled in this time.
A car acquire a velocity of 72 km per hour in 10 second starting from rest. Find
(1) the acceleration,
(2) the average velocity, and
(3) the distance travelled in this time.
The slope of a speed-time graph gives:
A body starts from rest and acquires a velocity 10 m s-1 in 2 s. Find the acceleration.
A bicycle initially moving with a velocity 5.0 m s-1 accelerates for 5 s at a rate of 2 m s-2. What will be its final velocity?
State how the velocity-time graph can be used to find
The acceleration of a body
When is the positive acceleration?
How can you find the following?
Velocity from acceleration – time graph.
Can you suggest a real-life example about the motion of a body from the following velocity – time graph?
A packet is dropped from a stationary helicopter, hovering at a height ‘h’ from ground level, reaches the ground in 12s. Calculate
- the value of h
- final velocity of packet on reaching the ground. (Take g = 9.8 ms−2)
