Last seen: Jan 25, 2021
(a) A karate player applies the blow with large velocity in a very short interval of time on the slate, therefore large force is exerted on the slate ...
(a) The soft ball will have less inertia as compared to the heavy ball and it would not hurt the players. (b) By pulling the hand backwards it reduc...
The cork is pushed out in forward direction by the hot steam. The test tube is pushed in the backward direction. It explain Newton’s III law of moti...
When the air escapes out from the balloon the straw moves in the opposite direction of the air moved out of the balloon. This activity explains the ...
Yes, in this case each of them receives an instantaneous reaction as a result of throwing the sand bag. This activity explain Newton’s III law of mo...
The water-filled in tumbler and tray are at rest. On moving/turning around the tray at faster speed the water spills because the tray and the tumbler ...
The force applied on the card due to flicking changes the inertia of the card but the coin resist a change and stay at the rest i.e. inertia of rest a...
Inertia: It is the tendency of a body to maintain its state of rest or of motion.
Inertia: The natural tendency of an object to resist change in their state of rest or of motion is called inertia. The mass of an object is a measur...
Force: It is a push or pull on an object that produces acceleration in the body on which it acts. A force can do 3 things on a body (a) It can cha...
Newton’s I law of motion: An object remains in a state of rest or of uniform motion in a straight line unless acted upon by an external unbalanced for...
Newton’s second law of motion: The rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of the for...
m1 = 60 kg u1 = + 5 m/s positive direction v = ? m2 = 55 kg u2 = -6m/s negative direction v = ? Total momentum of two bodies before collis...
Bullet m1 mass = 20 g = 0.02 kg u1 = 0 v1 = + 150 m/s Pistol m2 = 2kg u2 = 0 v2 = ? Total momentum of the pistol and bullet before fir...
Three examples based on Newton’s third law are : Swimming: We push the water backward to move forward.action – water is pushed behindreaction – wa...
Newton’s first law explains about the unbalanced force required to bring change in the position of the body. Second law states/explains about the am...
When a person jumps from a height he is in state of inertia of motion. When he suddenly touches the ground he comes to rest in a very short time and h...
This is because stone is heavier than football and heavier objects offer larger inertia. When we kick a football its mass is less and inertia is als...
Consider two bodies i.e., balls A and B, the mass and initial velocities are mAuA and mBuB respectively before collision. The two bodies collide and f...
While we are travelling in a moving car, our body remains in the state of rest with respect to the seat. But when driver applies sudden breaks or stop...