AP Physics midterm review - Units 1,2,3,5

Front

What is the direction of velocity and acceleration of a ball at the highest point of a vertical circle?

Back

At the highest point, the velocity is horizontal (tangential to the circle) and the acceleration is directed downward (toward the center of the circle).

Front

What happens to the velocity of a ball at the highest point of its parabolic path?

Back

The velocity is zero at the highest point (point Q) because the ball momentarily stops before descending.

Front

In uniform circular motion, which statement is NOT true?

Back

The velocity of the ball is not constant; it changes direction continuously.

Front

What is the direction of acceleration of a ball at point P in a parabolic path?

Back

The acceleration is directed downward due to gravity, regardless of the ball's position in the path.

Front

What do the graphs of distance versus time and speed versus time look like for an object uniformly accelerated from rest?

Back

The distance vs. time graph is a parabola, while the speed vs. time graph is a straight line with a positive slope.

Front

Define uniform circular motion.

Back

Uniform circular motion is the motion of an object traveling at a constant speed along a circular path.

Front

What is centripetal acceleration?

Back

Centripetal acceleration is the acceleration directed toward the center of a circular path, keeping the object in circular motion.

Front

What is the relationship between velocity and acceleration in circular motion?

Back

In circular motion, velocity is tangential to the path, while acceleration is directed toward the center of the circle.

Front

What is the formula for centripetal acceleration?

Back

Centripetal acceleration (a_c) = v^2 / r, where v is the tangential speed and r is the radius of the circle.

Front

What is the significance of the highest point in a projectile's trajectory?

Back

At the highest point, the vertical component of velocity is zero, and the object is only affected by gravity.