A train rolls past a stationary observer. To him, the train is moving at a speed of 25 m/s west, and a woman on the train is moving at a speed of 24.6 m/s
west. How long does it take the woman to move 4 m relative to the train?
A. 9.0 s
B. 10 s
C. 8.4 s
D. 7.1 s

Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane