4.03.23 | Physics Review

A school bus comes to a sudden stop and all of the bags on the floor start to slide forward due to the effect of gravitational force.

• True
• False

When a body is in motion the net external force can never be zero.

• True
• False

What is the SI unit of force?

• Tesla
• Newton
• Joules
• Kg

An object with zero acceleration is not changing its velocity.

• True
• False

The x-axis of a velocity-time graph represents _____.

• Velocity
• Time
• Acceleration
• Position

The slope of a velocity-time graph represents _____.

• Acceleration
• Velocity
• Momentum
• Direction

The slope of a position-time graph represents ________.

• Velocity
• Acceleration
• Gravity
• Momentum

What is an inertial frame?

• A frame of reference that is not undergoing any acceleration.
• A frame of reference in which the acceleration is happening at a consistent rate
• A frame of reference in which acceleration cannot happen.
• A frame of reference in which objects are traveling toward each other at the same speed.

What is the relationship between the strength of a gravitational force and mass?

• The more mass, the stronger the force of gravity
• The more mass, the weaker the force of gravity
• Mass has no effect on gravity
• Mass and distance both increase the strength of gravity

Kepler’s first law states the path of each planet around the sun is ________ with the sun at one focus.

• elliptical
• circular
• parabolic
• square