Physics revision Grade 9

The slope of tangent line drawn in the position graph is used to calculate:

• Displacement

• Instantaneous Velocity

• Instantaneous Acceleration

• Force

Time derivative of velocity:

• Displacement

• Velocity

• Acceleration

• Force

The velocity equation can be written in the form “ v=v i +at ”. Which statement is correct?

• The slope is initial velocity (vi)

• The slope is acceleration (a)

• The y-intercept is acceleration (a)

• All of the above

To calculate displacement graphically, we can use the area under the:

• Position graph

• Velocity graph

• Trajectory graph

• All of the above

Given the velocity equation v=-3t+5, the acceleration is _______ and the initial velocity is______:

• 2m/s^2, 5m/s

• -3m/s^2, 5m/s

• 5m/s^2, 3m/s

• 5m/s^2, -3m/s

In a projectile motion, the acceleration is constant on the:

• Horizontal component

• Vertical component

• Displacement

• All of the above

In projectile motion, the acceleration is _________ at the horizontal axis.

• Increasing

• Decreasing

• Zero

• None of the above

The trajectory is made up of:

• One dot diagram

• Two dot diagrams

• Three dot diagrams

• Position graph