Last seen: Nov 14, 2021
Acceleration produced in a freely falling body, irrespective of its mass, is 9.8 m/s2.
Extremely large mass of the earth.
Kepler’s third law of planetary motion led Newton to establish the inverse-square rule for gravitational force between two bodies.
Kepler’s law of periods states that: The cube of the mean distance of a planet from the sun is directly proportional to the square of time it takes...
Newton explained the motion of planets on the basis of gravitational force between the sun and planets.
Johannes Kepler gave the three laws of planetary motion.
No, the acceleration produced in a freely falling body is independent of the mass of the body.
Gravitational force is responsible for the moon revolving round the earth.
Value of gravitational constant G on the earth and the moon is = 6.67 x 10-11 Nm2/kg2 Note that the value of G always remains constant irrespective ...
Mass of the man, m1 = 80 kg Speed of man, v1 Mass of bullet m2 = 20 g = 0.02 kg Speed of bullet v2 = 400 m/s Acc. to law of conservation of...
Mass of car A, m1 = 2000 kg Speed of car A, v1 = 10 m/s Mass of car B, m2 = 500 kg Speed of car B, v2 Acc. to law of conservation of moment...
Mass of the ball x, m1 = 1 kg Speed of ball x, u1 = 2 m/s Mass of ball y, m2 = 1 kg Speed of ball y, u2 = 0 m/s (at rest) Velocity of ball...
Mass of first truck, m1 = 500 kg Speed of first truck, u1 = 4 m/s Mass of second truck, m2 = 1500 kg Speed of second truck, u2 = 2 m/s Com...
Mass of the boat mb = 300 kg Velocity of boat vb Mass of girl mg = 50 kg Velocity of girl vg = 3 m/s Acc. to the law of conservation of mom...
Mass of the boy, m1= 50 kg Speed of boy, u1 = 5 m/s Mass of trolley m2 = 20 kg Speed of trolley u2 = 1.5 m/s Combined mass of boy and trol...
It is possible for a small animal to fall from a considerable height without being injured because a small animal has small mass, so the momentum prod...
An aircraft needs air because air moving under the wings of aircraft is strong enough to hold it up and air is also required to burn the fuel in aircr...
The paratroopers roll on landing to increase the time taken to reduce the momentum of their body. Thus, the rate of change of momentum is reduced and ...
Car seat-belts are somewhat stretchable so as to increase the time taken by the passengers to fall forward. Due to this, the rate of change of momentu...
(a) If of a balloon filled with compressed air and its mouth untied is released with its mouth in the downward direction, the balloon moves in the upw...