If the period of contact between the wall and the ball is 0.1 second. An iron ball having a mass of 100 g with a velocity of 10 m/s collides with the wall at an angle of 300 and rebounds with the same angle. What is the velocity with which it moves? Later, a mass of 250 kg is placed in the wagon. Q.14. A wagon weighing 1000 kg moves 50 km/h on smooth rails. (c) In the absence of an external force on the system What is the tension in the rope at 1 m from this end? Q.12. A rope of length 5 m is kept on a frictionless surface and a force of 5 N is applied to one of its ends. (d) React against the rocket and push it upĪnswer: (d) React against the rocket and push it up
(c) Heat up the air which lifts the rocket Rocket Engines lift rocket from the earth surface because the hot gas with high velocity What is the velocity of the muzzle if the recoil velocity is 500 m/s. A bullet of mass 5 gm is fired from a gun of mass 5 kg. Which of the following is momentum closely related to? A body, whose momentum is constant, must have constant Get unlimited access to this and over 100,000 Super. What is the motion of the rocket based on? With Super, get unlimited access to this resource and over 100,000 other Super resources. A particle of mass m moving with velocity v strikes a stationary particle of mass 2m and sticks to it. What is the value of this impulsive force? When a force acts on a ball of mass 150 g for 0.1 sec, it produces an acceleration of 20 m/s 2. What is the force exerted by the ball on the hands of the player? If the process of catching is to be completed in 0.1 sec. A player catches a ball of mass 150 gm moving at a rate of 20 m/s. (d) The flow of the air around the wings cause an upward force which compensates for the force of gravityĪnswer: (a) The thrust of the jet plane compensates the force of gravity (c) The force of gravity doesn’t act on bodies moving with high speed (b) The weight of the air is the weight of the plane (a) The thrust of the jet plane compensates the force of gravity How is a jet plane able to fly in the air? If the period of contact between the wall and the ball is 0.1 second.Q.3. What is the velocity with which it moves?ġ0. Answer 5. Later, a mass of 250 kg is placed in the wagon. Physics Secondary School answered Impulsive force of 100 n acts on a body for 1 seconds the change in its linear momentum is Advertisement Rishumdogra is waiting for your help. What is the tension in the rope at 1 m from this end?ĩ. A wagon weighing 1000 kg moves 50 km/h on smooth rails. What is the velocity of the muzzle if the recoil velocity is 500 m/s.Ĩ. A rope of length 5 m is kept on a frictionless surface and a force of 5 N is applied to one of its ends. (D) React against the rocket and push it up AnswerĪnswer: (D) React against the rocket and push it upħ. (C) Heat up the air which lifts the rocket Which of the following is momentum closely related to?Ħ. What is the motion of the rocket based on?ĥ. What is the value of this impulsive force?Ĥ. A force 1000 N is acting on a car with mass 1000 kg in 10 second. I impulse (N s) Example - resulting Velocity after an Acting Force. The impulse is equal to the change of momentum caused by the impulsive force and can be expressed as. What is the force exerted by the ball on the hands of the player?ģ. The product of the impulsive force and the time it acts is called the impulse.
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