Physics Unit 2 Quiz 3

The basic idea of _____ is that objects that are at rest tend to stay at rest while moving objects keep moving at the same velocity unless acted upon by an outside force.

• Newton's first law of motion

• Newton's second law of motion

• Newton's third law of motion

• Newton's fourth law of motion

The tendencies of objects to remain in their current states, whether at rest or moving, is the property called _____.

• inertia

• motion

• gravitation

• acceleration

These describe _____.

1)The acceleration of an object acted upon by a constant force is directly proportional to the force

2)The acceleration of an object acted upon by a constant force is inversely proportional to the object's mass.

• Newton's first law of motion

• Newton's second law of motion

• Newton's third law of motion

• Newton's fourth law of motion

Tags

NGSS.MS-PS2-2

A force is applied to an object. The object accelerates in the same direction as the applied force. This is part of _____.

• Newton's first law of motion

• Newton's second law of motion

• Newton's third law of motion

• Newton's fourth law of motion

Tags

NGSS.HS-PS2-1

The formula that represents Newton's second law of motion is _____.

• F = ma

• a avg = v/t

• s = d/t

• d = m/v

If a and b have a constant ratio, they are

• inversely

• directly

• proportional

If when a increases, b decreases, they are

• inversely

• directly

• proportional

If when a increases, b increases, they are

• inversely

• directly

• proportional

You help your friend construct a soap box derby car for the All-American Soap Box derby's Stock Division. Her car has a mass of 34.01 kg (75 lbs). The race lasts just 30 seconds. You think if her car attains an acceleration of 0.55 m/s² to attain a final velocity of 16.54 m/s (37mph), she will win the race. What force would be needed to accomplish this goal.

• F = 18.71 N

• F = 12 N

• F = 5 N

• F = 12 kg

Tags

NGSS.MS-PS2-2

Hurtling through space towards Mars in a spacecraft, you want to reach your destination sooner by increasing your acceleration by _____.

• increasing your rocket's output to increase the force

• increasing the spacecraft's mass

• 
  increasing the number of kilograms aboard

• decreasing kg-m/s2

Tags

NGSS.MS-PS2-2