6 Questions

Questions and Answers

- 1.A bullet comes to rest in a block of wood in 1.0 x 10^-2 seconds, with an acceleration of -8.0 x 10^4 metres per second squared. What was its original speed, in metres per second?
- A.
-800 m/s

- B.
800 m/s

- C.
12.5 m/s

- D.
-12.5 m/s

- 2.
- A.
21.6 miles/hour

- B.
0.006 miles/hour

- C.
0.36 miles/hour

- D.
0.0001 miles/hour

- 3.A car is going 60 miles per hour and accelerating at 10 miles per hour squared. How far does it go in 1 hour?
- A.
70 miles

- B.
35 miles

- C.
65 miles

- D.
30 miles

- 4.A motorcycle is going 60 miles per hour and decelerating at 60 miles per hour squared. How far does it go in 1 hour?
- A.
90 miles

- B.
60 miles

- C.
30 miles

- D.
120 miles

- 5.A block of wood is shooting down a track at 10 metres per second and is slowing down because of friction. If it comes to rest in 20 seconds and 100 metres, what is its deceleration, in metres per second squared?
- A.
-0.5 m/s^2

- B.
0.5 m/s^2

- C.
1.5 m/s^2

- D.
-1.5 m/s^2

- 6.A car starts from rest and is accelerated at 5.0 metres per second squared. What is its speed 500 metres later?
- A.
26 m/s

- B.
50 m/s

- C.
5000 m/s

- D.
70.7 m/s