Well, if the bag is moving across the floor at a constant velocity. Then I would assume that the Fnet force is equal to 0, and thus the value of acceleration would also be equal to 0.
Wave speed is 8 m/s
Explanation:
- Wave speed or speed of the wave is given by the formula
v = distance traveled by the wave/time
- Here, distance traveled = 16 m and time = 2 s
⇒ Wave speed = 16/2 = 8 m/s
A
the unit used for measuring both work and energy is the joule
Answer:
The train is moving with a speed of 57.6 m/s.
Explanation:
Given that,
Distance of observer from the road, d = 40 m (due south)
Velocity of the train, v = 60 m/s (due east)
So,
t is time
Net displacement is given by :
Differentiating above equation wrt t as :
Put t = 4 s
So, the train is moving with a speed of 57.6 m/s.
Definitely the last one, brain stem