8. A truck and a car travel toward each other, both having a speed of 8.00-m/s. Each driver has amass of 80.0-kg. Including the drivers, the mass of the truck is 4000-kg and the mass of the car is 800-kg. If the vehicles undergo a perfectly inelastic collision and the collision time is 0.120 seconds, what magnitude of force does the seat belt exert on each driver?

A net force of 15 N exerted on a wooden block produces an acceleration of 5 m/s. The mass of the wooden block is O a. 0.333 kg O b. 75 kg O c. 3 kg O d. 10 kg A 425g football is having a momentum 8.5kgm/s, south. The velocity of the football is O a. 20m/s, North O b. 20m/s, South O c. 3.61m/s, South O d. 3.61m/s, North If the normal force (N) acting on the object in the figure is 75 N, the mass (m) of the object is

5. Find the recoil velocity of a 70.0 kg ice hockey goalie, originally at rest, who catches a 0.150 kg hockey puck slapped at him at a velocity of 35.0 m/s. How much kinetic energy is lost during the collision? Assume friction between the ice and the puck-goalie system is negligible.

You are the juror of a case involving a drunken driver whose 1044.0 kg sports car ran into a stationary 2047.0 kg station wagon stopped at a red traffic light. The cars stuck together and slid with locked wheels for 10.0 m before coming to rest. The coefficient of sliding friction on the dry road was 0.7. Estimate the speed of the sports car when it hit the station wagon. Estimate the instantaneous acceleration of the sports car during the actual collision if the colliding cars reach the same final speed after collapsing a combined total distance of 0.7 m.

Alice who has a mass of 55.0 KG is riding at 25.0 m/s in her new sports car. when she must certainly slam on the brakes to avoid hitting a cow crossing the road she strikes the airbag that brings her body to stop in 0.6 seconds what average force does a seatbelt exert on her

A disk is rotating on a horizontal axis as shown in the figure. Answer the following questions if you pull out at A and push in at B along the axis of the disk.What is the direction of the torque acting on the disk? What is the direction of the initial angular momentum vector for the disk? The applied torque causes the wheel's axis (or angular momentum vector) to move. From the front view, what is the direction of motion of the L vector?     A disk is rotating on a vertical axis as shown in the figure. Answer the following questions if you push in at A and pull out at B along the axis of the disk. What is the direction of the torque acting on the disk? What is the direction of the initial angular momentum vector for the disk? The applied torque causes the wheel's axis (or angular momentum vector) to move. From the front view, what is the direction of motion of the L vector?

4. A 3 kg rifle fires a 0.002 kg bullet with a recoil velocity of 1 m/s. What is the velocity of the bullet? Before After