Freefall & Motion
Trending Questions
The acceleration due to gravity on planet is times the acceleration due to gravity on planet . A man jumps to a height of on the surface of . What is the height of the jump by the same person on planet ?
A man is carrying a load equal to his own weight 'w' on his head. If he jumps from the roof of a building, then the weight experienced by the man during his fall will be :
2W
W
Zero
None of these
A man throws the ball with the same speed vertically upwards one after the other at an interval of seconds. What should be the speed of the throw so that more than two balls are in the sky at any time? (given )
A fruit is dropped from a height of 20 m. Find the velocity with which it would hit the ground.
Assume acceleration due to gravity g=10m/s2.
40 m/s
50 m/s
20 m/s
can't be evaluated
The velocity of a body, starting at rest and freely falling towards Earth, after one second is
A movie scene reads thus: " Katrina is thrown off a cliff by villains. Salman has to save her but he jumps one second later than when she falls." He still saves her since his weight is much more than that of Katrina.
Assuming that the day was non-windy, is the scene logically correct?
True
False
In vacuum all freely falling bodies have ____
same velocity
same acceleration
same speed
None of these
- 19.6 m/s
- 9.8 m/s
- 0 m/s
- 44.2 m/s
- Hammer
- Coin
- Both will reach at the same time
- Insufficient information
- weight
- magnetic force
- frictional force
Give an equation of motion for the height of a falling object.
Among which of the following situations the object(s) is/are in free fall?
1. An object dropped from a certain height.
2. An object is thrown upward or a person jumping off the ground.
3. Flying in a aircraft.
4. A car accelerating at 9.8 ms−2in the road.
Only 1st is in free fall.
Only 3rd is in free fall.
Only 1st and 2nd are in free fall.
Only 1st and 3rd are in free fall.
- Different acceleration
- Forces of same magnitude
- Same velocity at any instant
- Change in inertia
- 5 m
- 20 m
- 15 m
- 10 m
An object is said to be in a state of free fall when
It accelerates under the force of gravity.
When the only force acting on it is the weight of the object.
Initial velocity can be a zero or a non-zero value.
All of these.
- A man landing through a parachute
- An apple falling on moon
- A rocket propelling into space
- A heavy stone falling from a cliff
- No
- Yes
- A man landing with a parachute
- An apple falling on moon
- A rocket propelling into space
- A block falling from a cliff