Phys Sem 1 (test, 70 quest.) V4 2023

Front

What is the definition of displacement?

Back

Displacement is the shortest distance from the initial to the final position of an object, along with the direction.

Front

How is speed defined in physics?

Back

Speed is the ratio of the change of position to the time interval during the change.

Front

What does instantaneous acceleration refer to?

Back

Instantaneous acceleration is the rate of change in velocity at an instant of time.

Front

What does negative acceleration indicate about an object's motion?

Back

Negative acceleration indicates that the object is accelerating in a direction opposite to the stated positive direction.

Front

What is the formula to calculate final velocity using initial velocity, acceleration, and displacement?

Back

Final velocity (v) = Initial velocity (u) + (acceleration (a) * time (t)) or v^2 = u^2 + 2as.

Front

What is the relationship between velocity and displacement?

Back

Velocity is the rate of change of displacement with respect to time.

Front

What is the significance of the slope in a position-time graph?

Back

The slope of a position-time graph represents the speed of the object.

Front

How do you calculate average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What does a negative value for acceleration imply about an object's motion?

Back

A negative acceleration value implies that the object is slowing down if it is moving in the positive direction.