Question

Please check my answers on this physical science quiz, thanks

1. in which of the following scenarios are action and reaction forces involved?
a. when a tennis racket hits a ball
b. when you step from a curb
c. when you row a boat
d. all of the above**

2. the product of an object's mass and velocity is its
a. centripetal force**
b. momentum
c. net force
d. weight

3. what is conserved when 2 objects collide in a closed system?
a. acceleration
b. momentum**
c. speed
d. velocity

4. what is the momentum of a 50 kilogram ice skater gliding across the ice at a speed of 5 m/s?
a. 10 kg * m/s
b. 500 kg * m/s
c. 50 kg
d. 250 kg * m/s**

Answer 1

2 is wrong
other correct.

Answer 2

is 2 c?

Answer 3

no it was momentum, and thanks for checking my other ones

Answer 4

You did 4 right but missed 2? That makes no sense.

Answer 5

I misread the question thanks for your help

Answer 6

I see, thanks, you had me pretty puzzled :)

Answer 7

hi guys, these answers were correct ( just did the QC ) but it's kinda confusing, so for newtons 3rd law of motion and momentum:
1. D
2. B
3. B
4. D
(:

Answer 8

Thanks a lot, really helped!

Answer 9

DBBD

Answer 10

anonymous is righttt