What is a newton? (1 point)
7 answers
A newton is a unit of force in the International System of Units (SI). It is defined as the force required to accelerate a mass of one kilogram by one meter per second squared.
A tennis player swings and hits the ball away. How does the force of the tennis racket affect the motion of the ball? (1 point)
•It changes both the direction and the speed of the ball.
• It does not change the speed or the direction of the ball.
• It changes the speed of the ball but not the direction.
• It changes the direction of the ball but not the speed.
•It changes both the direction and the speed of the ball.
• It does not change the speed or the direction of the ball.
• It changes the speed of the ball but not the direction.
• It changes the direction of the ball but not the speed.
It changes both the direction and the speed of the ball.
A net force is applied to a moving object. Which statement best describes the effect of the force? (1 point)
•The force will cause the object to come to a stop.
•A net force is applied to a moving object. Which statement best describes the effect of the force? (1 point)
• The force will cause a change in the direction of the object.
•The force will cause a change in the momentum of the object.
•The force will cause the object to come to a stop.
•A net force is applied to a moving object. Which statement best describes the effect of the force? (1 point)
• The force will cause a change in the direction of the object.
•The force will cause a change in the momentum of the object.
The force will cause a change in the momentum of the object.
What is the momentum of an object? (1 point)
•the state of motion of an object with mass
•the velocity of the object
• the net force acting on the object
•the rate of change in the velocity of an object
•the state of motion of an object with mass
•the velocity of the object
• the net force acting on the object
•the rate of change in the velocity of an object
The momentum of an object is the product of its mass and velocity.