5 Questions
According to Newton's 1st law of motion, a body continues in its state of rest or motion with constant speed in a straight line unless it is affected by an external force. This applies to a body that is:
Moves at constant speed in a straight line
In the context of Newton's 2nd law of motion, whenever a force is acting on a body, it accelerates in the same direction of the force. This best describes the behavior of a body when:
It accelerates in the same direction of the force
A 50 kg lamp is hung from a cord. What horizontal force is needed to keep it in equilibrium at an angle of 20° with the vertical? This scenario relates to:
Linear motion with parallel acceleration
A 4 kg object has a velocity of (3i) m/s. Eight seconds later, its velocity has increased to (8i -10j) m/s. Find the components, magnitude, and direction of the force acting on this object. This situation is an example of:
Tangential acceleration in linear motion
A person weights a fish on a spring scale attached to the ceiling of an elevator. If the mass of the fish was originally 2 kg, what will be its weight if the elevator accelerates at 3m/s^2? This problem deals with determining the fish's weight when the elevator accelerates:
Upward
Test your knowledge of Newton's laws of motion, acceleration, velocity, and forces with this quiz prepared by Dr. Emad Sayed.
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