A tractor T is pulling a trailer M with a constant velocity. If the velocity is 20 m/s and M = 200 kg and T = 500 kg, then the force on the trailer due to the tractor is
A. 600 N forward.
B. 450 N backward.
C. 200 N backward.
D. 35 N forward.
E. 0.
E. 0.
You might also like to view...
Satellites that lack craters are generally old, inactive bodies
Indicate whether the statement is true or false
What causes the seasons?
A. the elliptical shape of Earth's equator B. the changing distance between Earth and the Sun C. Earth's spin axis is tilted from the poles of the celestial sphere D. the tilt of Earth's spin axis relative to Earth's orbit
The effect of de-forestation on the global warming problem is that
A) this makes the problem worse, because trees consume ozone from the atmosphere. B) this actually helps solve the problem, because trees consume ozone from the atmosphere. C) this actually helps solve the problem, because trees consume carbon dioxide from the atmosphere. D) this has no effect on the global heating problem, although it has harmful effects in other ways. E) this makes the problem worse, because trees consume atmospheric carbon dioxide.
An object moves 10 m east in 30 s and then returns to its starting point taking an additional 70 s. If west is chosen as the positive direction, what is the average speed of the object?
a. 0.20 m/s c. 0.50 m/s b. –0.20 m/s d. 0 m/s