Physics A level Mechanics

What is the globally-agreed system of measurement units formally named in 1960?

• Imperial System

• Metric System

• International System of Units

• Customary System

What is the measure of how close a reading is to the true value of a quantity?

• Resolution

• Precision

• Magnitude

• Accuracy

What is a physical quantity that has both magnitude and direction?

• Scalar

• Speed

• Distance

• Vector

What is the equation to find the area under a velocity-time graph for constant acceleration?

• Area = height x base

• Area = 1/2 (A + B) x base

• Area = 1/2 (u + v) x time

• Area = velocity x time

What is the acceleration due to gravity acting on a projectile?

• -9.8 m/s^2

• 9.8 m/s^2

• 1 m/s^2

• 0 m/s^2

What is the equation to find the displacement of a projectile in the vertical direction?

• s = u sin θ

• s = 1/2 (u + v) x t

• s = 1/2 (u + v) x t

• s = u + at

What is the equation to find the velocity using the gradient of a displacement-time graph?

• v = u cos θ

• v = u sin θ

• v = u + at

• v = u + at

What is the measure of how close a set of values are to each other when measured multiple times?

• Magnitude

• Precision

• Resolution

• Accuracy

What is the formula for calculating the horizontal velocity of a projectile?

• u tanθ

• u cosθ

• u sinθ

• u secθ

According to Newton's 1st law, an object will stay at rest or move with constant velocity unless acted upon by:

• Friction

• Unbalanced forces

• Air resistance

• Gravity