Question

A B C D 20. A ball rolls off a table with a horizontal velocity of 6 m/s. If it takes 0.5 seconds for it to reach the floor: What is the vertical component of the ball's velocity in m/s just before it hits the floor? (Use g = 10 m/s^2) a) 6, b) 10, c) 3, d) 5.

A B C D 21. A ball rolls off a table with a horizontal velocity of 6 m/s. If it takes 0.5 seconds for it to reach the floor: What is the horizontal component of the ball's velocity in m/s just before it hits the floor? a) 6, b) 10, c) 3, d) 5.

A B C D 22. A single force of 30 N acts upon a 5-kg block. What is the magnitude of the acceleration of the block in m/s^2? a) 35, b) 25, c) 150, d) 6.

A B C D 23. A net force of 30 N acting on a wooden block produces an acceleration of 1.5 m/s^2 for the block. What is the mass of the block in Kg?

a) 30, b) 45, c) 28.5, d) none of the above

A B C D 24. A 5-kg block being pushed across a table by a force P has an

acceleration of 3.0 m/s^2. If the magnitude of P is 22 N, what is the magnitude of the frictional force in Newtons acting upon the block? a) 22, b) 15, c) 66, d) 7.

A B C D 25. At a given instant in time, a 5-kg rock that has been dropped from a high cliff experiences a force of air resistance of 15 N. What are the magnitude and direction of the acceleration of the rock in m/s^2?

a) 6.8, b) -6.8, c) 3, d) -3.

Answer 1