A block of mass m slides down a frictionless plane inclined at an angle θ with the horizontal. The normal reaction force exerted by the plane on the block is:
mgsinθ.
mg.
mgcosθ.
Zero, since the plane is frictionless.
Two toy cars (16 kg and 2.0 kg) are released simultaneously on an inclined plane that makes an angle of 300 with the horizontal. Make a statement which best describes their acceleration after being released.
The 16 kg car accelerates 8 times faster than the 2.0 kg car.
None of the above.
The 2.0 kg car accelerates 8 times faster than the 16 kg car.
Both cars accelerate at the same rate.
