What is the angle θ with the vertical from which the ram should be released to strike the object P at a horizontal velocity of 5 m/s?

35.1º

Fill in the blank: The downward velocity of the ball just before striking the rigid block is ______.

9.8 m/sec

True or False: The conservation of energy principle states that the total energy in a closed system remains constant.

True

Riddle: I can be calculated using momentum and mass, I change direction but not magnitude in elastic collisions. What am I?

Momentum vector

What is the height from which a 2 kg ball is dropped to achieve a downward velocity of 9.8 m/s just before impact?

4.9 m

Multiple Choice: What is the momentum vector of the ball just after impact in a perfectly elastic collision? (a) 19.6 kg m/s (b) 9.8 kg m/s (c) 14.7 kg m/s (d) 29.4 kg m/s

(a) 19.6 kg m/s

Fill in the blank: The distance the ram falls, h, is expressed as ______.

7(1 - cos θ)

True or False: In a perfectly elastic collision, kinetic energy is conserved.

True

Riddle: I represent the balance of forces during impact, equal at both approach and separation. What am I?

Relative velocity

What is the principle governing the height and angle of release for the ram in the given scenario?

Principle of Conservation of Energy