A ball is tossed Northward with a speed of 6.00 m/s at an angle of 60.0 above the horizontal. At its highest point, what are its velocity v and its acceleration a? Question 13 options:

a)	v = 3.00 m/s North, a = 0

b)	v = 3.00 m/s North, a = 9.80 m/s2 down

c)	v = 0, a = 9.80 m/s2 down

d)	v = 0, a = 0

The coefficient of static and kinetic frictions between a 6.0 kg box and a desk are 0.10 and 0.15, respectively. What is the net force on the box when a 10 N horizontal force is applied to the box?Question 14 options:

a)

5.9 N

b)

2.2 N

c)

8.8 N

d)

zero

Mikasa stands on the edge of a cliff and throws a stone vertically downward with an initial speed of 10 m/s. The instant before the stone hits the ground below, it has 450 J of kinetic energy. If she were to throw the stone horizontally outward from the cliff with the same initial speed of 10 m/s, how much kinetic energy would it have just before it hits the ground?Question 15 options:

a)

800 J

b)

450 J

c)

100 J

d)

50 J

e)

950 J

A stack of physics textbooks sits on a level table. A force F acts on the stack, and causes the whole thing to accelerates at 3.0 m/s2. A 1.0 kg textbook is then added to this stack. The same force is applied again, and now the stack accelerates at 2.0 m/s2. Neglect Friction. What was the mass of the original stack?Question 16 options:

a)

1.0 kg

b)

2.0 kg

c)

3.0 kg

d)	None of the above.

Solve each question