1. Negative acceleration is also called .
A) speed
B) velocity
C) deceleration
D) displacement

2. An object with an acceleration of –10 m/s2 is .
A) speeding up 10 m/s every second
B) slowing down 10 m/s every second
C) moving at a constant speed of –10 m/s
D) moving at a constant velocity of –10 m/s

3. When an object's speed and direction are known, so is its .
A) speed
B) velocity
C) acceleration

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?