Modular Assessment 2 in General Physics 1

What is the relationship between the kinetic energy an object has and its speed?

• Direct square proportion
• No relationship
• Direct proportion
• Inverse proportion

Two identical eggs are dropped from the same height. The first egg lands on a concrete floor while the second lands on soft paddings. Ignore air resistance. Which experiences a greater impulse?

• They experience equal impulses.
• They both experience zero impulse.
• The first egg
• The second egg

What is the relationship between the impulse on an object and the force acting on it?

• Direct proportion
• Inverse proportion
• Direct square proportion
• No relationship

What is the relationship between the gravitational potential energy of an object and its position from the ground?

• Direct proportion
• Inverse proportion
• Direct square proportion
• No relationship

What is conserved in elastic collisions?

• Both total momentum and total kinetic energy
• Neither total momentum nor total kinetic energy
• Total momentum only
• Total kinetic energy only

Why is a free-body diagram needed? I. To identify the forces acting on an object II. To show whether an object experiences a net force III. To calculate its velocity at a particular moment in time

• I and II only
• I and III only
• II and III only
• I, II, and III

The SI unit for work done is equivalent to which of the following?

• Watts
• Newtons per meter
• Kilogram-meters per second
• Kilogram-meters per second squared

Which describes impulse?

• Change in momentum
• Mass times velocity
• Force times velocity
• Force divided by time

Which is equivalent to 1 Joule?

• 1 Watt-second
• 1 Watt per second
• 1 Newton per meter
• 1 Watt

Under what condition is the work done by a force equal to zero when considering the angle between the force and the displacement?

• When the angle is right
• When the angle is acute
• When the angle is obtuse
• When the angle is zero