Physics Post-Test

success = effort × wisdom. If the effort is 3 effs and the wisdom is 4 wifs, what is the success?

• 12 eff·wifs

• 1.33 eff·wifs

• 0.75 eff·wifs

• 7 eff·wifs

• 1.18

• 10.2

• 5.2

• 14.2

$300 − 200¢ =

• $298

• $100

• 100¢

• 298¢

300¢ / $30 =

• 10

• 100

• 0.1

• 1

10 mm = 1 cm, so 500 mm / 10 cm =

• 0.5

• 50

• 5

• 500

Force = mass × acceleration. In shorter notation, this is F = ma. If the force F is 4 Newtons, and the mass m is 12 kilograms, what is the acceleration a?

• 16 meters/second²

• 8 meters/second²

• 3 meters/second²

• 0.33 meters/second²

Speed = distance ÷ time. In shorter notation, this is s = d/t. If the distance d is 10 km, and the speed s is 40 kilometers / second, what is the time t?

• 50 seconds

• 0.25 seconds

• 4 seconds

• 30 seconds

d = 5 + ½at². If d = 23, and a = 4, what is t?

• 3

• 0.44

• 2.25

• 9

d = ½at². If d is in units of meters, and t is in units of seconds, a is in units of ___?

• meters/second

• meters/second²

• meters/second³

• meters/second⁴

MV = mu. If M = 10, V = 30, and m = 2, what is u?

• 6

• 20

• 1.5

• 150