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Beginner
Conceptual
MCQ

Which of the following statements is an expression of the equation of continuity?

Intermediate
Mathematical
FRQ

A batter hits a fly ball which leaves the bat \( 0.90 \) \( \text{m} \) above the ground at an angle of \( 61^\circ \) with an initial speed of \( 28 \) \( \text{m/s} \) heading toward centerfield. Ignore air resistance.

Beginner
Conceptual
MCQ

When we refer to an object’s speed, we’re talking about:

Intermediate
Conceptual
MCQ

A solid sphere, solid cylinder, and a hollow pipe all have equal masses and radii. If the three of them are released simultaneously from the top of an inclined plane and do not slip, which one will reach the bottom first?

Intermediate
Mathematical
GQ

Wanda watches the fish in her fish tank and notices that the angelfish like to feed at the water’s surface, while the catfish feed \( 0.300 \) \( \text{m} \) below at the bottom of the tank. If the average density of the water in the tank is \( 1000\) \( \text{kg/m}^3 \), what is the absolute pressure on the catfish?

Beginner
Conceptual
MCQ

Consider an object on a rotating disk at a distance \( r \) from its center, held in place on the disk by static friction. Which of the following statements is not true concerning this object?

Advanced
Conceptual
MCQ

Above is the graph of an object’s velocity as a function of time. Which of the following is true about the motion?

Advanced
Conceptual
MCQ

When the speed of a rear-wheel-drive car is increasing on a horizontal road, what is the direction of the frictional force on the tires?

Advanced
Proportional Analysis
MCQ

A gun can fire a bullet to height \( h \) when fired straight up. If the same gun is pointed at an angle of \( 45^\circ \) from the vertical, what is the new maximum height of the projectile?

Advanced
Mathematical
GQ

An Olympic bobsled team goes through a horizontal curve at a speed of \( 120 \) \( \text{km/hr} \). If the radius of curvature is \( 10.0 \) \( \text{m} \), what is the apparent weight the crew experiences—express in terms of \( mg \)?

Advanced
Mathematical
MCQ

A \( 1.0 \)\( \text{-kg} \) object is moving with a velocity of \( 6.0 \) \( \text{m/s} \) to the right. It collides and sticks to a \( 2.0 \)\( \text{-kg} \) object moving with a velocity of \( 3.0 \) \( \text{m/s} \) in the same direction. How much kinetic energy was lost in the collision?

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