AP Physics 1 Semester Exam REVIEW

Front

What is tension in a string?

Back

Tension is the force exerted along the length of a string, rope, or wire when it is pulled tight by forces acting from opposite ends.

Front

How do you resolve forces into components?

Back

To resolve a force into components, use trigonometric functions: the horizontal component is found using cosine (F_x = F * cos(θ)), and the vertical component using sine (F_y = F * sin(θ)).

Front

What is the formula for calculating the position of an object under constant acceleration?

Back

The position x can be calculated using the equation: x = x_0 + v_0*t + (1/2)*a*t^2, where x_0 is the initial position, v_0 is the initial velocity, a is the acceleration, and t is the time.

Front

What does a velocity-time graph represent?

Back

A velocity-time graph shows how the velocity of an object changes over time. The slope of the graph represents acceleration.

Front

What is the relationship between distance, speed, and time?

Back

The relationship is given by the formula: distance = speed × time.

Front

What is the significance of the area under an acceleration-time graph?

Back

The area under an acceleration-time graph represents the change in velocity of the object over the time interval.

Front

What is uniform circular motion?

Back

Uniform circular motion is the motion of an object traveling at a constant speed in a circular path, where the direction of the velocity vector is continuously changing.

Front

How does increasing the radius of a circular path affect the tension in the string?

Back

If the speed remains constant while the radius increases, the tension in the string decreases because the centripetal force required to maintain circular motion decreases.

Front

What is the formula for centripetal force?

Back

Centripetal force (F_c) is given by the formula: F_c = (m*v^2)/r, where m is the mass, v is the speed, and r is the radius of the circular path.

Front

What is the difference between distance and displacement?

Back

Distance is the total path length traveled, while displacement is the straight-line distance from the initial to the final position, including direction.