ANSWER ALL QUESTIONS! 1. Bob believes that If two forces that are identical in strength but exactly opposite in direction act on the same object, that object must necessarily be motionless. Explain whether Bob is correct or incorrect and why.

2. A child sits on a toboggan and is pulled along by their parent. If the child's brother jumps on to the toboggan, and the parent continues to pull with the same force, will the toboggan speed increase, decrease or stay the same and explain why.

3. Draw a Free Body Diagram (FBD) and determine the net force in the following situation: Four children are fighting over a stuffed toy. One exerts a force of 15 N [S], one exerts a force of 8 N [E], one pulls 6 N [W] and one pulls 15 N [N].

4. A 20 kg cart accelerates at 0.5 m/s2. If there is a 45 N frictional force, determine:

1) The net force acting on the cart 2) The applied force acting on the cart 3) How far the cart will travel in 3 seconds, if it starts from rest.