An office worker smacks a table, bringing his hand to rest in 0.0025 seconds from an initial speed of 4.00 m/s. How much force is exerted on the table, taking the effective mass of his forearm and hand to be 1.5 kg

Q: A cue stick strikes a stationary pool ball, with an average force of 32 N over a time of 14 ms. If…

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Q: A baseball (m = 153 g) approaches a bat horizontally at a speed of 37.6 m/s (84.1 mi/h) and is hit…

A: Given:  Mass of the ball (m) = 153 g = 0.153 KgInitial speed of the all u = 37.6 m/sFinal speed of…

Q: A 0.140 kg baseball is thrown with a velocity of 26.9 m/s. It is struck with an average force of…

A: F∆t=mvf--vi∆t=mvf--viF

Q: A boy who is, 73 kg, is training on Dagobah. He runs up a  incline for 10 m with an average velocity…

A: Power dissipation is same for both the journey and power is work done per unit time.  Use this as…

Q: A bullet of mass 11.7 g is fired into an initially stationary block and comes to rest in the block.…

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Q: An pickup truck with mass 1.70  103 kg is traveling eastbound at +15.4 m/s, while a compact car with…

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Q: A hockey goalie is standing on ice. Another player fires a puck (m = 0.170 kg) at the goalie with a…

A: Given: The mass of the puck: m=0.170 kg The initial velocity of the puck: vi=+69.1 m/s

Q: Cart A, with a mass of 0.20 kg, travels on a horizontal air track at 3.0 m/s and hits cart B, which…

A: Given :     Mass of cart A , mA = 0.20 kg     Mass of cart B , mB = 0.40 kg     Initial  velocity of…

Q: A block of mass 1 kg slides on a smooth surface at 2.0 m/s and follows 4.0 kg block travelling at…

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Q: A(n) 1.45 kg skateboard is coasting along the pavement at a speed of 7.04 m/s when a(n) 0.356 kg cat…

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Q: An pickup truck with mass 1.72 x103 kg is traveling eastbound at +15.2 m/s, while a compact car with…

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Q: A railroad car of mass 2.1  104 kg moving at 4.00 m/s collides and couples with two coupled railroad…

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Q: A gymnast jumps straight up, with her center of mass moving at 3.99 m/s as she leaves the ground.…

A: Let us consider a gymnast who jumps straight up with her moving center of mass at an initial speed…

Q: A stationary object in space explodes into three parts of unequal mass. Which of the following…

A: Given Initial velocity of object = 0 m/s Explodes into three unequal parts We have to choose the…

Q: package of mass m = 15 kghorizontally toward the right with a speed of vi = 4.2 m/s as in the figure…

A: Given: The mass of the fisherman m1=76 kg The mass of the boat m2=112 kg The mass of the package…

Q: Two blocks slide on a collision course across a frictionless surface, as in the figure. The…

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Q: A soft ball (m = 0.14 kg) moving horizontally to the right hits a wall with a speed of 16.2 m/s.…

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Q: A person slaps her leg with her hand, bringing her hand to rest in 2.50 milliseconds from an initial…

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Q: The head of a hammer (m = 1.5 kg) moving at 4.5 m/s strikes a nail and bounces back with the same…

A: according to newton's second law Fnet=∆P∆t ∆P is change in momentum∆t is time taken   since it is…

Q: A hockey goalie is standing on ice. Another player fires a puck (m = 0.170 kg) at the goalie with a…

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Q: 56. mmh A baseball (m = 149 g) approaches a bat horizontally at a speed of 40.2 m/s (90 mi/h) and is…

A: Given:- mass of baseball=149g speed of baseball-40.2m/s time=1.10ms

Q: A baseball of a mass 0.16 kg is moving 25 m/s when it is hit directly back to the pitcher at a speed…

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Q: In the figure, block 1 of mass m1 slides from rest along a frictionless ramp from height h = 6.00 m…

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Q: Two ice skaters, initially at rest, push off each other in opposite directions. The skater labeled…

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Q: You and your friends are doing physics experiments on a frozen pond that serves as a frictionless,…

A: Given data: Mass of Nowell, m1=80 kg Speed v1=6.00 m/s at θ1=370 Mass of Allyzza, m2=50 kg Speed…

Q: A 0.0052kg bullet moving at 672m/s strikes a 0.7kg wooden block at rest on a frictionless surface.…

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Q: A cannon of mass 6.79 x 103 kg is rigidly bolted to the earth so it can recoil only by a negligible…

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Q: 65.5 kg Frankie is repairing their ship at a dock. He throws a 2.25 kg tool away from him at 3.2 m/s…

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Q: A railroad car of mass 3.50 x 104 kg moving at 2:70 m/s collides and couples with two coupled…

A: Given Data  Mass of each railroad car is m=3.50×104 kg Speed of the first car is v1=2.70 m/s Speed…

Q: Two beads, one blue and one green, are threaded on a wire, which is bent in the shape shown in the…

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Q: A 91 kg man lying on a surface of negligible friction shoves a 68 g stone away from himself, giving…

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Q: A gymnast jumps straight up, with her center of mass moving at 3.24 m/s as she leaves the ground.…

A: Initial velocity (u) = 3.24 m/s Initial position of center of mass = 0 m

Q: At the center of a 50 m -diameter circular ice rink, a 75 kg skater traveling north at 2.5 m/s…

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Q: A 7 kg steel ball strikes a wall with a speed of 8.13 m/s at an angle of 48.2 ◦ with the normal to…

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Q: A railroad car of mass 2.56 x 10" kg is moving with a speed of 4.10 m/s. It collides and couples…

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Q: Two objects A and B collide and stop after the collision. Object A is 19 kg with the velocity of 4.2…

A: Given, Mass of object A, MA = 19 kg Velocity of object A before collision, VA = 4.2 m/s Mass of…

Q: Two blocks slide on a collision course across a frictionless surface, as in the figure. The…

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Q: Luke Skywalker, 73 kg, is training on Dagobah. He runs up a  incline for 10 m with an average…

A: The given values are, mwalker=73 kgs=10 mv1=6 mi/h=6 mi/h1.6 km1 mi1 h3600 s1000 m1 km=2.6667…

Q: A 4.0 kg dog runs from one end of a 21 kg canoe to the other, a distance of 4.9 m. Assuming…

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Q: A car with mass mc = 1074 kg is traveling west through an intersection at a magnitude of velocity of…

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Q: In the figure here, a 7.0 g bullet moving directly upward at 870 m/s strikes and passes through the…

A: Using the law of conservation of momentum,

Q: Two blocks slide on a collision course across a frictionless surface, as in the figure. The…

A: Using the conservation of momentum along the X axis.

Q: A baseball (m = 148 g) approaches a bat horizontally at a speed of 40.7 m/s (91.1 mi/h) and is hit…

A: The impulse is average force that the bar exerts on the ball and change in time to contact.