A 0.03 kg ball is thrown horizontally along the (+) x-axis directly towards a wall with a speed of 12 m/s. The ball bounces straight back with a speed of 8 m/s.The impulse of the wall on the ball is: A.) -0.6 kg m/s B.) 1.20 kg m/s C.) -0.2 kg m/s D.) 0.10 kg m/s

A fan blows a cart of mass m a distance d. The same fan blows a heavier cart of mass 2m through the same distance d.  Which cart experiences the larger impulse? Options: A) The lighter cart experiences the larger impulse. B) Both carts experience the same impulse. C) The heavier cart experiences the larger impulse. D) The answer cannot be determined.

1. a) If there is an external force acting on a system, can you please tell whether the momentum would be changed? If the momentum is changed, can you link the change in momentum to another physical quantity? 1 b) Define Impulse. Mention two units of Impulse. Is it a vector or scaler? If it is a vector, what would be the direction of impulse? 1 c) A golf ball with a mass 46.0 g strikes a wall with an initial speed of 140 km/h along –x- direction and bounces back at the speed of 145 km/h flying in xy plane, which makes 30° with the horizontal. Calculate the impulse vector in terms of magnitude and direction. If the duration of the collision is 0.900 ms, determine the magnitude of the average force acting on the ball during the collision. 2+1

A baseball weighs 0.16-kg. A) If the velocity of a pitched ball is 24 m/sec and after being batted, it is 37 m/sec in the opposite direction, find the change in momentum of the ball and the impulse of the blow.

20. In a car crash test which lasts 0.15 seconds, a car of mass 1500 kg approaches a wall at 15 m/s and bounces off going 2.6 m/s the other direction. Find the impulse on the car during the collision and the average net force exerted on the car. 15 m/s 2.6 m/s

E4.A force of 128 N acts on a ball for 0.45 s. If the ball is initially at rest: (a) What is the impulse on the ball? (b) What is the final momentum of the ball?

A 2 kg object is moving to the right with a velocity 21 m/s when it experiences an impulse of -31 kg m/s. What is the object's velocity vector after the impulse. O 71 m/s 0 31 m/s O (0.5i) m/s 00 O-0.51 m/s

Questions 1.-4. refer to a head-on collision between two balls with the following initial values: Before Collision m2 V Ix 3.5 kg 4.5 kg 5.0 m/s -2.0 m/s 1. What is the total momentum (in kg m/s) of the system? 2. If the two balls stick together, what is their common speed (in m/s) after they collide? 3. How much kinetic energy (in joules, positive number) was lost in this collision? 4. If the two balls do not stick together, and the first ball moves at vịx = -1 m/s after they collide, what is the speed (in m/s) of the second ball?

In this perfectly inelastic collision the carts are moving on a frictionless surface. Cart A has a momentum of 24 kg-m/s [West]. Cart B has a momentum 10 kg-m/s. [South] What is the magnitude of their combined momentum after the collision? a) cannot be determined without knowing masses and velocities b) 34 kg-m/s c) 26 kg-m/s d) 14 kg-m/s e) 240 kg-m/s

32. The x-component of a force on a 46-g golf ball by a 7-iron versus time is plotted in the following figure: F(N)4 30 t (msec) 50 100 Find the x-component of the impulse during the intervals i. [0, 50 ms], and ii. [50 ms, 100 ms] b. Find the change in the x-component of the momentum during the intervals iii. [0, 50 ms], and iv. [50 ms, 100 ms]