A baseball has a mass of 0.21kg. The velocity of the pitched ball is 41.0m/s, and the velocity of the hit ball is 64.0m/s in the opposite direction. If the ball remains in contact with the bat for 0.0018s, what is the magnitude of the average force applied to the ball? 2,683 N b. а. 10,250 N 12,250 N d. C. 15,250 N 22,250 N е.
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- John fires a projectile in a Uwindsor lab and notes that the 20.0g projectile travels 785 m/s. It then strikes a ball of clay and penetrates 24.5 cm into it. Based on this information, what 48. would John calculate as the average force the projectile exerts on the clay? А. 2.07 x 105 N В. 1.97 x 104 N С. 3.93 х 104 N D. 2.52 x 104 N Е. 6.26 х 103 NA particle of mass 2.5kg moves according to the equation x(t)-10t, where x is in meters and t is in seconds. The force (in N) acts on the particle is Select one: a. 25 b. 40 с. 35 d. 50If you have a ball with a mass of 6.00kg, that has an initial velocity of vA=(2.00i + 5.00j)m/s and a final velocity of vB=(-2.00i + 8.00j)m/s, What is the change in velocity in unit vector format? a. -4.00i + 3.00j b. -2.83i + 3.61j c. 4.00i – 3.00j d. 0.00i + 13.0j
- 27. A 1385 kg cannon containing a 58.5 kg cannon ball is on wheels. The cannon fires the cannon ball, giving it a velocity of 49.8 m/s north. What is the initial velocity of the cannon the instant after it fires the cannon ball? ay. mB VA VBDuring a collision with a wall, the velocity of a 0.200-kg ball changes from 20.0 m/s toward the wall to 12.0 m/s away from the wall. If the time the ball was in contact with the wall was 60.0 ms, what was the magnitude of the average force applied to the ball? а. 13.3 N О b. 40.0 N C. 107 N O d. 16.7 N е. 26.7 NV:00 a 46 For testing, a jetski coming in at 34.1 m/s collides with a tree and stops in around 1 second. A dummy passenger weighing 1481.3 N is protected by an airbagthat slows its velocity in 1.7 s. What is the magnitude of average force does the dummy experience during the collision? (N) Answer: 3028.86 The correct answer is: 3028.86
- During a collision with a wall, the velocity of a 0.200-kg ball changes from 20.0 m/s toward the wall to 12.0 m/s away from the wall. If the time the ball was in contact with the wall was 60.0 ms, what was the magnitude of the average force applied to the ball? O 167N 0400N O 13.3 N 107 N9. a. An arrow is fired from a bow with a velocity of 69.2 m/s. The arrow has a mass of 0.082 kg. The arrow travels 0.855 m as it's being released/ while the force of the taunt string acts on it. What is the change in KE, AKE, of the arrow? Previous submissions: b. What was the force of the bow string? Previous submissions:A 160 N net force acts right on a 20 kg object. If the initial velocity of the object is 20 m/s right, then what is the final velocity of the object after the net force has acted through a displacement of 50 m right?
- A 0.450-kg hammer is moving horizontally at 7.00 m/s when it strikes a nail and comes to rest after driving the nail 1.00 cm into a board. Assume constant acceleration of the hammer-nail pair.a. Calculate the duration of the impact.b. What was the average force exerted on the nail?2. A person with a mass of 65 kg travels through a snow using snow board. He is skiing for 20s and a constant friction force of 25 N acts on him. What is his change in velocity?1. A 2.50-kilogram mud ball drops from rest at a height of 13.0 m. If the impact between the ball and the ground lasts 0.51 s, what is the magnitude of the average force exerted by the ball on the ground? f60 f60 sst ssfo ssf60