A 1050 kg car is driving with a speed of 30 m/s. The driver sees a cop on the side of the road and slows down to a speed of 15 m/s in 3 s. a) What is the acceleration of the car? b) What is the force acting on the car? c) What is the impulse acting on the car?

4) You drop a golf ball from a height of 1 m above the ground. It hits the ground and returns to a height of 0.5 m. Your friend makes the following argument: "The impulse Earth imparts to the golf ball as it falls must be larger than the impulse the ground imparts when the ball bounces because the time interval over which Earth exerts a force on the ball is much larger than the time interval over which the ground exerts a force on the ball." Draw one or more momentum bar charts and use them to explain either your friend is right or wrong.

A particle with a mass of 1.90 kg is acted on by a force Fx acting in the x-direction. If the magnitude of the force varies in time as shown in the figure below, determine the following. (a) impulse of the force (in kg · m/s )  kg · m/s (b) final velocity of the particle (in m/s) if it is initially at rest  m/s (c) Find the final velocity of the particle (in m/s) if it is initially moving along the x-axis with a velocity of  −25.00 m/s.  m/s

Problem 2. A force acts on a 25.0 kg object with the magnitude as a function of time as shown in figure below. (a) Determine the impulse imparted by the force on the object between 0 and 30 seconds. (b) Determine the final velocity of the object if it had an initial velocity of 20.0 m/s in the negative direction. (c) Find the average force between t = 0 and 30 seconds. F,(N) 1000- t (s) 30 0- 10 20