1. A boy starts jogging with a speed of 4.0 m/s and reaches a speed of 5.0 m/s after covering a distance
of 9 m. What is the boy's acceleration? 5
(15 Points)
0.50 m/s^2
1.0 m/s^2
2.0 m/s^2
3.0 m/s^2

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.

Coal contains energy. a. light b. kinetic c. chemical d. mechanical