F
flestion02
Guest
Trying to teach myself physics and i dont have the answer keys from the book i have...
1.) On earth, a stone falls freely from rest for 8.0 seconds. What is the stone's velocity after 8.0 seconds?
-78 m/s
100 m/s
-178 m/s
7.8 m/s
2.) Rock A is dropped from a cliff while rock B is thrown upward from the same position. When they reach the ground, which rock has greater velocity?
A
B
Same velocity
None of the Above
3.) From the choices below, the best example of the commutative law of vector addition would be:
A + B
A(A+B) = AA + BB
A + B = B + A
AB = BA
1.) On earth, a stone falls freely from rest for 8.0 seconds. What is the stone's velocity after 8.0 seconds?
-78 m/s
100 m/s
-178 m/s
7.8 m/s
2.) Rock A is dropped from a cliff while rock B is thrown upward from the same position. When they reach the ground, which rock has greater velocity?
A
B
Same velocity
None of the Above
3.) From the choices below, the best example of the commutative law of vector addition would be:
A + B
A(A+B) = AA + BB
A + B = B + A
AB = BA