physics test

what is the SI unit for mass

• kilogram

• gram

• velocity

• seconds

A velocity–time graph has a straight line sloping downward. This represents:

• Acceleration

• Deceleration

• Uniform velocity

• Rest

A graph with a curved line on a distance–time plot represents:

• Uniform velocity

• Uniform acceleration

• Changing velocity

• Rest

What is the acceleration of an object represented by a straight line in a velocity–time graph?

• Zero

• Constant

• Increasing

• Decreasing

What does the slope of a distance–time graph represent?

• Speed

• Velocity

• Acceleration

• Displacement

In a velocity–time graph, the area under the graph represents:

• Acceleration

• Distance

• Speed

• Time

What is the volume of a rectangular block with dimensions 4 cm × 2 cm × 5cm

• 10cm³

• 20cm³

• 30cm³

• 50cm³

If the mass of an object is measured to be 2.5kg, how many significant figures are in this measurement?

• 1

• 2

• 3

• 4

The radius of a sphere is 3cm . What is its volume?

• 36cm³

• 113.1cm³

• 1130cm³

• 36.5cm³

A car moves with an initial velocity of 10m/s and accelerates at 2m/s² for 5s . What is its final velocity?

• 15m/s

• 20m/s

• 25m/s

• 30m/s