A 500 g ball strikes a wall perpendicularly at a speed of 5.0 m/s, rebounding at the same speed. The magnitude of the change in momentum of the ball is * S 2.5 kgm/s 5.0 kgm/s O 10 kgm/s 15 kgm/s O 25 kgm/s
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Q: A 1.00 kg ball is tossed at 4 m/s. How many N.s of momentum does the ball have?
A: given , mass of the ball , m = 1 kg velocity of the ball , v = 4 m/s
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Q: A 47 g tennis ball is served at 45 m/s. If the ball started from rest, what impulse was applied to…
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- A car of mass 1000.0 kg moving at 20.0 m/s collides with a 5000.0 kg truck at the initial velocity of 10.0 m/s. After the collision, the car stops. Neglecting friction, what is the velocity of the truck after the collision? 20 m/s 10 m/s 8.0 m/s 12 m/s 10.0 m/s 14 m/sA Roger Federer (65kg) is in position to hit a ball served to him. The 0.060-kg tennis ball comes towards Federer at 12 m/s [fwd]. He strikes the ball and returns it at a speed of 18 m/s [bwd]. What is the magnitude of the ball's change in momentum? a) 0.36 kg-m/s b) 0.72 kg-m/s 390 kg-m/s d) 1.8 kg-m/sWhat is the magnitude of the momentum of a 200 gg baseball thrown at 50 m/sm/s ?
- Four balls collide and stick together as shown. What is the final velocity of the set given the masses and velocities before colliding are: Ball Mass Initial Velocity 1 2.5 kg 2 m/s 2 1.5 kg 1 m/s 3 0.97 kg -0.37 m/s 4 0.94 kg -0.44 m/s 4 1 2 3 4A 1200-kg car moving at 15.6 m/s suddenly collides with a stationary car of mass 1500 kg. If the two vehicles lock together, what is their combined velocity immediately after the collision? O6.9 m/s 8.6 m/s O 12.1 m/s 5.5 m/sA hungry 5.37 kg fish swimming at 1.86 m/s swallows a 0.96 kg fish that was swimming towards it at 2.98 m/s. What is the final speed (in m/s) of the formerly hungry fish?
- A ball weighing 10 kg is initially at rest, then suddenly explodes into 3 pieces. The picture shows the length and direction for each one of the three velocities. What were the length and direct of the ball before the explosion? Hint : use the momentum conservation principle on the y axis and x axis.Janet is skating at the ice rink with her little sister Sarah who is initially standing at rest on the ice. Janet then collides head-on into Sarah. Janet continues forward at 1 m/s, while Sarah is thrown backward at 3 m/s. (After the collision, Janet and Sarah are moving in the same direction). Janet’s mass is 55 kg and Sarah’s mass is 39 kg. How fast was Janet moving initially, in m/s?O0 kg m/s O 20 kg m/s O 10 kg m/s O 5 kg m/s O 2.5 kg m/s The figure shows the force exerted on a particle as a function of time. What is the impulse? 15 F (N) 5 10 -0.5 0 05 1 t(sec)
- A 51 kg boy on roller skates moves with a speed of 3 m/s. He runs into a 42 kg girl on skates. Assuming they cling together after the collision, what is their speed (in m/s)? (Assume the girl is initially at rest.) m/sThree objects are moving along a straight line as shown in the figure. Taking the positive direction to be to the right, what is the total momentum of this system? 5.00 m/s 4.00 m/s 2.00 m/s 8.00 kg 15.0 kg 3.00 kg -14.0 kg · m/s 0.00 kg m/s +14.0 kg m/s O +106 kg m/sA green pool ball (p = 30 kg x m/s) moves towards a yellow pool ball (p = -9 kg x m/s). Then, the two pool balls collide. After the collision, the green pool ball has a momentum of 3 kg x m/s. How much momentum does the yellow pool ball have after the collision? Explain your answer.