A 0.0800-kg ball is thrown at 25.0 m/s toward a brick wall. A) Determine the imp

Question

A 0.0800-kg ball is thrown at 25.0 m/s toward a brick wall. A) Determine the impulse that the wall imparts to the ball when it hits and rebounds at 25.0 m/s in the opposite direction. The positive direction is toward the wall. (Express your answer to three significant figures). B) Determine the impulse that the wall imparts to the ball when it hits and rebounds at an angle of 45.0. The positive direction is toward the wall. (Express your answer to three significant figures). C) If the ball thrown in part (b) contacts the wall for 0.0100 s, determine the magnitude and direction of the force that the wall exerts on the ball. The positive direction is toward the wall. (Express your answer to three significant figures).

Explanation / Answer

a) impulse = 0.08*(25*2) = 4 Ns

b) Impulse_hori = 0.08(25cos(45) + 25) = 3.414

impulse_ver = 0.08*25*sin(45) = 1.414

Impuse = sqrt(1.414^2 + 3.414^2) = 3.695 Ns

c) Force = impulse/time = 3.695/0.01 = 369.5 N magnitude

Direction = 180 +arctan(1.414/3.414) = 202.498 degree anticlockwise from horizontal

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.