3. A soft Nerf TM ball of mass 0.2 kg bounces off a wall at the angles shown in the diagram as shown in the diagram. The ball's speed before it hits the wall is 15 m/s but the ball's speed when leaves is only 10 m/s. The collision with the wall lasts 0.25 sec. a. What is the magnitude of the average force that the wall exerts on the ball? Hint: the force of the wall will consist of both a normal force and a friction force. 53.180 15 m/s 10 m/s 36.820 b. What is the direction of this force? Give angle relative to horizontal.|2. On level ground, a child is pulling a sled with a rope that is inclined at 30 above horizontal. The tension in the rope is 50 Newtons. The mass of the sled is 8 kilograms and the kinetic friction force between the sled and ground is 35 Newtons. a. What is the magnitude of the acceleration of the sled? b. What is the magnitude of the normal force of the ground on the sled