Question

In: Physics

Please show work! a) A 80 kg baseball player jumps with a horizontal velocity of 8.1...

Please show work!

a) A 80 kg baseball player jumps with a horizontal velocity of 8.1 m/s and collides with an 89

kg teammate who jumps with a horizontal velocity of 2.7 m/s in the opposite direction. If the players became tangled in mid-air, what would their combined horizontal velocity be after the impact?

A) 2.41 m/s   B) 2.99 m/s   C) 5.26 m/s   D) 5.54 m/s

b) After the collision, which horizontal direction do the tangled players move?

A) the players do not move after the collision   B) in the initial direction of the 80 kg player C) in the initial direction of the 89 kg player D) the players move vertically upward after the collision

c) A baseball (weight 5 oz.) thrown at 88 mph strikes a 30 oz. bat moving at a velocity of 72 mph. The coefficient of restitution between the baseball and bat is 0.49. How fast is the bat moving after it strikes the baseball?

A)   37.9 mph B) 48.2 mph C) 60.3 mph D) 63.1 mph

d) How fast is the baseball moving after striking the bat in part c)?

A) 54.6 mph   B) 116.3 mph C) 138.7 mph D) 141.5 mph

e) If the coefficient of restitution was higher in part c), how would that affect the velocity of the ball after the collision (no calculations needed)?

A) the final velocity of the ball would be zero B) the final velocity of the ball would be slower C) the final velocity of the ball would not change D) the final velocity of the ball would be faster

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