Test 2

What is the sum of two or more vectors?

• resultant
• sum
• net force
• answer

What is the measure of how well a machine converts input work to output work?

• efficiency
• IMA
• AMA
• dynamics

What is the measure of how much help a machine provides?

• mechanical advantage
• IMA
• AMA
• efficiency

What is acceleration opposite the direction of motion?

• deceleration
• anti-aceleration
• mechanics
• displacement

What is a simple machine consisting of a rigid bar or beam resting upon a pivot?

• lever
• pulley
• inclined plane
• wedge

What quantity of motion is defined as the product of an object’s mass and velocity?

• momentum
• inertia
• acceleration
• power

What branch of physics addresses the effects of forces on matter?

• mechanics
• dynamics
• work
• resultant

What is the simple machine that is like a circular lever?

• wheel and axle
• pulley
• screw
• lever

What is any change in velocity?

• acceleration
• deceleration
• displacement
• speed

What is an object that hangs from a fixed point and swings back and forth because of gravity?

• pendulum
• pulley
• gravity
• wedge