Question

1. A swimming pool has a dimension of at the rate of 16 ft wide, 32 ft long and 8 ft deep. If it needed to be filled to full in 32 hours, what should be the rate in gal/min for water flowing to the pool?

a) 24 b)16 c)12 d)8 e) 36

2. Kiki releases a rock at rest from the top of a 80 m tower. What is the speed of the rock as it hits the ground?

a)40 m/s b) 48 m/s c) 56 m/s d) 32 m/s e) 36 m/s

3. The diameter of the Milky Way Galaxy is estimated at about 10⁵ light years. Express this distance in meters.

a) 9 x 10¹⁹m b)10 x 10¹⁶m c) 9 x 10¹⁸m d) 10 x 10¹⁵m e) 9 x 10²⁰m

4. Vector A is 3 units in length and points along the positive x-axis; vector B is 4 units in length and points along a direction 150˚ from the positive x-axis. What is the magnitude of A - B?

a) 1.4 units b) 6.8 units c) 2.2 units d) 4.8 units e) 7.2 units

Answer 1