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**
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
(:
DBBD
I see, thanks, you had me pretty puzzled :)
Thanks a lot, really helped!
2 is wrong
other correct.