|
Two identical bullets are fired one by a light rifle and the other by a heavy rifle with the same force. Which rifle will hurt the shoulder more and why?
|
|
1
|
5736
|
September 17, 2018
|
|
Describe Newton’s third law of motion
|
|
0
|
1420
|
March 21, 2018
|
|
What is the relationship between mass and inertia? Explain with the help of examples
|
|
0
|
23900
|
March 21, 2018
|
|
Derive the mathematical formula of conservation of momentum
|
|
0
|
12518
|
March 21, 2018
|
|
Derive the mathematical relation of Newton’s second law of motion
|
|
0
|
35622
|
March 21, 2018
|
|
Describe Newton’s first law of motion in detail, giving examples
|
|
0
|
953
|
March 21, 2018
|
|
Why do the driver and the person seated in front seat need a seat belt?
|
|
0
|
6879
|
March 21, 2018
|
|
Describe balanced forces with the help of two examples
|
|
0
|
4198
|
March 21, 2018
|
|
Why does an athlete puts some sands or cushion on the ground while high jumping?
|
|
0
|
9829
|
March 21, 2018
|
|
Two friends on roller-skates are standing 5 m apart facing each other. One of them throws a ball of 2 kg towards the other, who catches it
|
|
0
|
10843
|
March 21, 2018
|
|
Give few examples of Newton’s third law of motion
|
|
0
|
9534
|
March 21, 2018
|
|
Describe in brief an activity to illustrate the property of inertia of rest
|
|
0
|
10184
|
March 21, 2018
|
|
When small boy is trying to push a heavy stone, mention various forces acting on the stone
|
|
0
|
8507
|
March 21, 2018
|
|
Deduce Newton’s first law from the second law
|
|
0
|
17310
|
March 21, 2018
|
|
Water sprinkler used for grass lawns begins to rotate as soon as as the water is supplied. Explain the principle on which it works
|
|
0
|
12904
|
March 21, 2018
|
|
Why does a cricket player moves his hand backward while catching the ball?
|
|
0
|
22851
|
March 21, 2018
|
|
There are three solids made up of aluminium, steel and wood, of the same shape and same volume. Which of them would have highest inertia?
|
|
0
|
17125
|
March 21, 2018
|
|
Describe our walking in terms of Newton’s third law of motion
|
|
0
|
4181
|
March 21, 2018
|
|
Why does a boat tend to leave the shore, when passengers are alighting from it?
|
|
0
|
7210
|
March 21, 2018
|
|
Why can a small mass such as a bullet kill a person when fired from a gun?
|
|
0
|
36714
|
March 21, 2018
|
|
A bullet fired against a glass window pane makes a hole in it, and the glass pane is not cracked. But on the other hand, when a stone strikes the same glass pane, it gets smashed. Why is it so?
|
|
0
|
10141
|
March 21, 2018
|
|
On which factors does friction depend?
|
|
0
|
3152
|
March 21, 2018
|
|
What is the ratio of SI units to CGS units of momentum? How do you measure the effect of an impulsive force on the body?
|
|
0
|
3742
|
March 21, 2018
|