Option D
DJ Balance 6. An object of known mass M with speed vo travels toward a wall....
Question 16 A An object of known mass M with speed vo travels toward a wall. The object collides with it and bounces away from the wall in the opposite direction in which the object was initially traveling. The wall exerts an average force Fo on the object during the collision. A student must use the equation Ap= FAt to determine the change in momentum of the object from immediately before the collision to immediately after the collision. Which side...
You throw a 0.350 kg tennis ball horizontally toward a wall. The speed of the ball is 12 m/s before it hits the wall, and it bounces back with the same speed of 12 m/s. If the ball remains in contact with the wall during this collision for 0.025 s, what is the magnitude of the average force exerted on the ball?
A block of mass 7.8kg is sliding over a frictionless surface, toward the right, at an initial speed of 14m/sec. Let the x-axis point toward the right. Compute its initial momentum, P0, and record its momentum in the space provided: a) P0 = ________ i + ________ j b) The block collides with a wall, and afterwards is moving at 14m/sec toward the LEFT. (This is a “perfectly elastic collision”, BTW). Record its momentum after the collision, P1, in the...
10. An object of mass m is thrown with initial velocity vo at an angle o to the horizontal. The object strikes the ground after time t = t. Find: a. The change in object's momentum during its flight. b. The average value of the momentum during this time.
A racquet ball with mass m = 0.252 kg is moving toward the wall at v = 18.2 m/s and at an angle of θ = 25° with respect to the horizontal. The ball makes a perfectly elastic collision with the solid, frictionless wall and rebounds at the same angle with respect to the horizontal. The ball is in contact with the wall for t = 0.06 s. 1) What is the magnitude of the initial momentum of the racquet...
An object of mass m moving at speed v0 strikes an object of mass 2 m which had been at rest. The first object bounces backward along its initial path at speed v 0. Is this collision elastic, and if not, what is the change in kinetic energy of the system? a) The kinetic energy decreases by mv^2. b) The kinetic energy increases by mv^2. c) The kinetic energy decreases by mv^2/2. d) The collision is elastic.
A racquet ball with 0.500 kg mass is moving toward the wall at a speed of 20.0 m/s and at an angle of 35 degree with respect to the horizontal. The ball makes a perfectly elastic collision with the solid, frictionless wall and rebounds at the same angle with respect to the horizontal. The ball is in contact with the wall for a time interval of 0.0850 s. What is the average force on the ball during die collision process?...
6. A 50-kg front seat passenger in a car moving initially with a speed of 25 m/sisbr rest by an air bag in a time of 0.4 s a) What is the impulse acting on the passenger? b) What is the average force acting on the passenger in this process?? 7. A ball traveling with an initial momentum of 5.0 kg.m/s bounces off a wall and comes back in the opposite direction with a momentum of -4.5 kg.m/s a) What...
A block of mass m -2.00 kg collides head on with a block of mass m- 10.0 kg initially at rest on a rough horizontal surface. The block m strikes m2 with a speed of 4.00 m/s. Immediately after the very brief inelastic collision, the 2.00 kg block bounces back with a speed of 1.20 m/s. Ignore the effect of friction during the collision. (a) 4pts.] Calculate the speed of the 10.0 kg block immediately after the collision. (b) 4...