Which option is correct?#
Part 1#
It is possible for the acceleration and velocity vectors of an object to be always perpendicular to each other.
Answer Section#
True
False
Part 2#
An object can be accelerated without changing its kinetic energy.
Answer Section#
True
False
Part 3#
When measured from the zero-momentum reference frame, the system’s kinetic energy is also always zero.
Answer Section#
True
False
Part 4#
When a car accelerates gradually (no squealing tires), is the friction between the tires and the road kinetic or static?
Answer Section#
Kinetic
Static
Attribution#
Problem is licensed under the CC-BY-NC-SA 4.0 license.