VCE PE Formulas short answer version

FORCE = MASS x WHAT?

Answer explanation

The question is asking for the missing variable in the formula for force. According to Newton's Second Law of Motion, force is equal to the mass of an object multiplied by its acceleration. So, the correct answer is 'Acceleration'.

FORCE = WHAT X ACCELERATION?

Answer explanation

The question asks for what is multiplied by acceleration to get force. The correct answer is mass, as shown in Newton's second law of motion, which states that force equals mass times acceleration. Therefore, the correct choice is 'mass'.

MOMENTUM = WHAT X VELOCITY kg.m/sec

Answer explanation

The question asks for the missing variable in the equation for momentum. In physics, momentum is calculated by multiplying an object's mass by its velocity. Therefore, the correct answer is 'mass'. This implies that an object's momentum is directly proportional to its mass and velocity.

MOMENTUM = MASS X WHAT kg.m/sec

Answer explanation

In the question, momentum is equal to mass times 'what' expressed in kg.m/sec. The given option is 'velocity' which fits perfectly in this context. As per physics, momentum is indeed the product of mass and velocity of an object. Therefore, the correct choice is velocity.

IMPULSE = WHAT DIVIDED BY TIME?

Answer explanation

Impulse is a quantity in physics that is equal to the force acting on an object multiplied by the time interval over which it acts. Hence, impulse can mathematically be expressed as force divided by time. Therefore, the correct answer to the question is 'Force'.

IMPULSE = FORCE DIVIDED BY WHAT?

Answer explanation

The question asks for the quantity that is divided by force to obtain impulse. The correct option given is 'Time'. Impulse is indeed the product of the force applied to an object and the time period over which it is applied. Thus, if you divide impulse by force, you get time. Therefore, the explanation for the answer is that impulse equals force multiplied by time.

SPEED = WHAT DIVIDED BY TIME? - m/sec

Answer explanation

The question asks what is divided by time to calculate speed. The answer to this is 'distance'. Speed is calculated by dividing the total distance traveled by the total time taken. Therefore, the correct option is distance which is measured in meters per second (m/sec) as mentioned in the question.

SPEED = DISTANCE DIVIDED BY WHAT? - m/sec

Answer explanation

The question asks for the factor by which distance is divided to calculate speed. The provided option is 'TIME', which is indeed the correct factor. In physics, the formula for speed is distance divided by time, typically measured in meters per second (m/sec). Therefore, the answer is 'TIME'.

VELOCITY = DISPLACEMENT DIVIDED BY WHAT? - m/sec

VELOCITY = WHAT DIVIDED BY TIME - m/sec

Answer explanation

The question asks for what is divided by time to calculate velocity. The dimensional formula of velocity is m/sec. The only option provided is 'Displacement'. Displacement divided by time gives us velocity. Hence, displacement is the correct answer.