Semester 1 Physics Final

Front

What is the velocity of an object at 20 seconds on a Velocity-Time Graph?

Back

+5 m/s

Front

How do you calculate average acceleration from a Velocity-Time Graph?

Back

Average acceleration = (Change in velocity) / (Time interval)

Front

What is the formula for calculating weight?

Back

Weight = mass × gravitational acceleration (W = m × g) where g = 9.8 m/s².

Front

What is the significance of a positive acceleration?

Back

Positive acceleration indicates that an object's velocity is increasing.

Front

What is the significance of a negative acceleration?

Back

Negative acceleration (deceleration) indicates that an object's velocity is decreasing.

Front

How do you determine if a force is sufficient to lift an object?

Back

Compare the applied force to the weight of the object; it must be greater.

Front

What is the weight of a 10 kg object?

Back

Weight = 10 kg × 9.8 m/s² = 98 N.

Front

If a bag of groceries weighs 20 kg, what is its weight in Newtons?

Back

Weight = 20 kg × 9.8 m/s² = 196 N.

Front

How do you convert speed from km/min to km/hr?

Back

Multiply by 6 (since 10 minutes is 1/6 of an hour).

Front

What is the formula for speed?

Back

Speed = Distance / Time.