Please answer these questions and explain the solution clearly.

Daily In Class assignments: Frictional Force. Instruction: A). Write on a separate piece of paper B). Show all work, Free Body Diagram, setting up the sum of the forces, and clearly label the answer. C). Hand one in for each member of your group. 1). A 248 kg object moving at 19 m/s comes to stop over a distance of 38 m. What is the coefficient friction between the surfaces? What type of coefficient of friction should you solve for Kinetic or statics? (0.48) 2). A hockey puck is hit on a frozen lake and starts moving with a velocity of 13.0 m/s. It travels across the ice and 6.0s later, the velocity is 7 m/s. What is the coefficient of friction between the puck and the ice? What type of coefficient of friction should you solve for Kinetic or statics (0.10) 3). A 50.0-kg crate rests on the bed of a truck as. The coefficients of friction between the surfaces are uk=0.300 and us=0.400. Find the frictional force on the crate when the truck is accelerating forward relative to the ground at (a) 2.00 m/s", and (b) 5.00 m/s. (a. 10ON b. 147N). Hint: Calculate if the give acceleration can overcome force of static Friction. 4). A 33.ON plastic block is placed against a vertical wall and pushed against wall with a force of 55.ON. The Coefficient of static and kinetic friction between the plastic and wall are us = 0.420 and uk = 0.400 respectively. Does the block remain at rest? If not, what acceleration does the block slip down with? Neglected any friction between you and the block. FA = 65N_ 5). Two children, Alice (30.0kg) and Bob (35.0kg), go out sledding one winter day, Bob sits on the sled of mass 5.00kg and Alice gives the sled a forward push. The coefficients of friction between Bob and the upper surface of the sled are us = 0.300 and uk=0.200; the friction force between the sled and the icy ground is so small that we can ignore it. Alice finds that if she pushes too hard on the sled, Bob slides towards the back of the sled. What is the max pushing force she can exert without this happening? (118N) Alice 7 Bub