Understanding Motion and Gravity

What are the three main types of motion?

• Translational motion, vibrational motion, periodic motion

• Static motion, dynamic motion, uniform motion

• Linear motion, rotational motion, oscillatory motion

• Cyclic motion, linear acceleration, angular momentum

Define linear motion.

• Linear motion is the movement of an object in a circular path.

• Linear motion is the movement of an object along a straight line.

• Linear motion is the change in an object's position over time regardless of direction.

• Linear motion refers to the oscillation of an object back and forth.

What is rotational motion?

• Rotational motion refers to the motion of an object without any axis.

• Rotational motion is the motion of an object around a central axis.

• Rotational motion is the linear movement of an object in a straight line.

• Rotational motion is the motion of an object in a circular path without rotation.

Explain periodic motion with an example.

• A person walking in a park.

• An example of periodic motion is a pendulum swinging.

• A car driving in a straight line.

• A ball rolling down a hill.

What type of motion occurs when an object moves back and forth?

• Rotational motion

• Linear motion

• Oscillatory motion

• Translational motion

How does gravity affect falling objects?

• Gravity has no effect on the speed of falling objects.

• Gravity only affects objects that are not in motion.

• Gravity makes objects float away from the Earth.

• Gravity causes falling objects to accelerate towards the Earth.

What is the acceleration due to gravity on Earth?

• 8.9 m/s²

• 10.5 m/s²

• 9.00 m/s²

• 9.81 m/s²

Describe how gravity influences the motion of planets.

• Gravity has no effect on the speed of planets.

• Gravity only affects the size of planets.

• Gravity causes planets to orbit the Sun in elliptical paths due to the balance between gravitational attraction and their inertia.

• Planets move in straight lines due to gravity.

What is free fall?

• Free fall is when an object moves in a circular path.

• Free fall occurs when an object is thrown upwards.

• Free fall is the motion of an object under the influence of gravity alone.

• Free fall is the motion of an object in water.

How does mass affect the force of gravity?

• Gravity is independent of mass.

• Mass decreases the force of gravity.

• Mass increases the force of gravity.

• Mass has no effect on gravity.