Write a multiple-choice question that requires the reader to understand that velocity and acceleration can have opposite signs.

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.