Advertisements
Advertisements
Question
A freely falling object travels 4.9 m in 1st second, 14.7 m in 2 nd second, 24.5 m in 3rd second, and so on. This data shows that the motion of a freely falling object is a case of :
Options
uniform motion
uniform acceleration
no acceleration
uniform velocity
Solution
uniform acceleration
The displacement of the body in equal interval of time is unequal, but acceleration is constant. The acceleration will thus be uniform, so the answer is (b).
APPEARS IN
RELATED QUESTIONS
Name the physical quantity whose SI unit is :
(a) m/s (b) m/s2
Fill in the following blank with suitable word :
If a body moves with uniform velocity, its acceleration is ..............
A bus was moving with a speed of 54 km/h. On applying brakes it stopped in 8 seconds. Calculate the acceleration.
Derive the formula s= `ut+1/2at^2` , where the symbols have usual meanings.
When is the positive acceleration?
Multiple choice Question. Select the correct option.
At the maximum height, a body thrown vertically upwards has :
How can you find the following?
Acceleration from velocity – time graph.
Can you suggest a real-life example about the motion of a body from the following velocity – time graph?
How will the equations of motion for an object moving with a uniform velocity change?
Draw a velocity versus time graph of a stone thrown vertically upwards and then coming downwards after attaining the maximum height.