An object's acceleration is never

A. directly proportional to the net force.

B. inversely proportional to the object's mass

C. in the same direction as the net force.

D. in the opposite direction as the net force.

Does Earth's magnetic field move?

Which prenatal stage begins when a zygote is created through fertilization? A. fetal stage B. zygote stage C. embryonic stage D. germinal stage

An inclined plane is 5.00 m long and 3.00 m high. What is the ideal mechanical advantage of this machine?

A 20000 kg subway train initially traveling at 18.5 m/s slows to a stop in a station and then stays there long enough for its brakes to cool. The station's dimensions are 65.0 m long by 20.0 m wide by 12.0 m high.

Do true blackbodies exist in nature? Yes or No?

A liquid filled sealed system has cylinders with movable pistons on each end. The face of one piston has an area of 5 cm². The other piston has an area of 500 cm² and is supporting a weight of 2 kN on it.

A turntable is spinning on a frictionless axle when a ball of putty is dropped onto it from above. The putty sticks to the turntable when it lands. Is angular momentum conserved for the turntable and putty (the system) during this process?

A cheetah can run from 0 to 70 mph in 2.2 seconds. what is the cheetah's top speed in m/s?

Which statement about how light travels is true? A Light waves need a medium to travel, and they travel at the same speed even if the light source is moving.

Explain why the car reaches a top speed even though the thrust Force remains constant at 3500N