A 600-kg car makes a 90° turn. Its speed before the turn is 21.0 m/s and after the turn it is 24.0 m/s. What is the magnitude of the change in the car's momentum?
A) 19.1 × 103 kg?m/s
B) 10.2 × 103 kg?m/s
C) 9.55 × 103 kg?m/s
D) 12.0 × 103 kg?m/s
E) 22.2 × 103 kg?m/s
A
You might also like to view...
Suppose you were able to measure the composition of the first star that formed in the Milky Way's history. What would you expect it to have been made of at the time of its birth?
A) 100% hydrogen B) 75% hydrogen, 25% helium, and less than 0.1% other elements C) 98% hydrogen, 2% helium, and less than 0.1% other elements D) 70% hydrogen, 28% helium, and 2% other heavy elements
An astronomer claims to have measured the spectrum of a nearby galaxy and finds that the spectral lines are slightly blueshifted. This result is unreliable because it violates Hubble's law.
Answer the following statement true (T) or false (F)
The Sun's energy comes from ________.
A. its rotation slowing down B. the conversion of mass into energy C. the release of magnetic energy D. meteors and asteroids striking its surface
An AC generator consists of 6 turns of wire. Each turn has an area of 0.040 m2 . The loop rotates in a uniform field (B = 0.20 T) at a constant frequency of 50 Hz. What is the maximum induced emf?
a. 13 V b. 2.4 V c. 3.0 V d. 15 V e. 4.8 V