Newton's Laws

What does Newton's first law state about a body at rest?

• A body at rest will start moving on its own.

• A body at rest will eventually fall due to gravity.

• A body at rest will remain at rest unless acted upon by an external force.

• A body at rest will remain at rest until it is pushed.

How does Newton's first law describe a body in motion?

• A body in motion accelerates indefinitely without any force.

• A body in motion continues in motion at a constant velocity unless acted upon by an external force.

• A body in motion will eventually stop due to friction.

• A body in motion changes direction randomly without external influence.

What is meant by 'net force' in the context of Newton's first law?

• Net force is the force applied by a single object.

• Net force refers to the gravitational pull on an object.

• Net force is the speed of an object in motion.

• Net force is the total force acting on an object, determining its motion.

Can a body experience forces and still be at rest?

• No, a body cannot experience forces at rest.

• Yes, but only if it is in motion.

• No, forces always cause movement.

• Yes, a body can experience forces and still be at rest.

What is an example of a body that is at rest?

• A car parked in a driveway.

• A person walking down the street.

• A bird flying in the sky.

• A book lying on a table.

What does it mean for a body to be in equilibrium?

• A body is in equilibrium when it is moving at a constant speed.

• A body is in equilibrium when it is at rest only.

• A body is in equilibrium when the net force is at its maximum.

• A body is in equilibrium when the net force acting on it is zero.

How can two equal and opposite forces result in a net force of zero?

• Two equal and opposite forces result in a net force of zero because they cancel each other out.

• They increase the overall force acting on an object.

• They create a stronger force in the same direction.

• They cause an object to accelerate in one direction.

What role does vector algebra play in understanding net force?

• Vector algebra complicates the calculation of net force.

• Vector algebra is only used in geometry, not in physics.

• Net force can be determined without considering direction.

• Vector algebra is essential for calculating the net force by combining individual force vectors.

If a body is moving in a straight line with constant velocity, what can we say about the net force acting on it?

• The net force is increasing over time.

• The net force acting on it is zero.

• The net force is acting in the direction of motion.

• The net force is equal to the mass of the body.

What happens to a body if the net force acting on it is not zero?

• The body will remain at rest regardless of the net force.

• The body will move in the opposite direction of the net force.

• The body will accelerate in the direction of the net force.

• The body will experience no change in motion.