8th Grade Accelerated Science Unit 2 Physics-Motion

Front

What is Newton's second law of motion?

Back

Newton's second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula F = m * a.

Front

What is the relationship between mass, weight, and gravity?

Back

Weight is the force exerted by gravity on an object and is calculated as the product of mass and gravitational acceleration (W = m * g).

Front

What does a negative slope on a distance-time graph indicate?

Back

A negative slope indicates that the object is moving back towards the starting point, meaning it is slowing down or reversing direction.

Front

What is friction and how does it affect motion?

Back

Friction is a force that opposes the relative motion of two surfaces in contact. It can slow down or stop the motion of an object.

Front

How do you calculate net force?

Back

Net force is calculated by summing all the forces acting on an object, taking into account their direction.

Front

What is the formula for calculating speed?

Back

Speed is calculated using the formula S = d/t, where S is speed, d is distance, and t is time.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. It is directly related to the mass of the object.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can be calculated using the formula a = (final velocity - initial velocity) / time.

Front

What is the role of gravity in motion?

Back

Gravity is a force that attracts two bodies towards each other, affecting the motion of objects, especially those in free fall.