Question

1. the object is not moving at

a. 2 seconds b. 4 seconds c. 6 seconds d. 7 seconds

1. consider drops of water leaking from a water faucet. as the drops fall they

a) get closer together.
b) remain at a relatively fixed distance from each other.
c) get farther apart.

1. what is the average speed of a runner who runs 1.8 km in 300 s?

a)0.06 m/s b)6.0 m/s c)67 m/s d)6.7 m/s

1. acceleration is defined as the change in

a) velocity divided by the time.
b) time it takes to move from one speed to another speed.
c) distance divided by the time.
d) time it takes to move from one place to another place.

1. in order to find the components of a diagonal vector, you should

a) all of the above
b) draw a right - triangle and use the pythagorean theorem.
c) draw an arrow with a random size.
d) draw a square and use the pythagorean theorem.

1. suppose you take a trip that covers 240 km and takes 4 hours to make. your average speed is

a)960 km/h. b)480 km/h. c)60 km/h. d)240 km/h. e)120 km/h.

1. what is the magnitude of a vector with an x - component of 40 m/s and a y - component of - 25 m/s?

a)47 m/s b)31 m/s c)2225 m/s d)975 m/s

1. when you look at the speedometer in a moving car, you can see the cars

a) instantaneous speed.
b) average distance traveled.
c) average acceleration.
d) average speed.
e) instantaneous acceleration.

Explanation:

Answer:

(11) C. get farther apart
(12) B. 6.0 m/s
(13) A. velocity divided by the time
(14) B. draw a right - triangle and use the Pythagorean theorem
(15) C. 60 km/h
(16) A. 47 m/s
(17) A. instantaneous speed