When we take a reading from an instrument, we must look at an angle perpendicular to the scale, otherwise we may have (a)   error in our reading.

When we use a ruler with its zero mark worn out, we may introduce (a)   error into the reading.

Physical quantities with only magnitude are called (a)   .

What is the magnitude of the resultant force? Give 3 significant figures for your answer.

(a)  

The resultant force is in the direction of (a)   degrees below the horizontal.

Round your answer to 1 decimal place.

A person walks from A to B, C, D, E and to F in order.

Find his displacement in kilometres.

(a)  

A person is walking at a speed of 6 m/s. He increases his speed to 10 m/s in 2 seconds.

What is his acceleration in $$ms^{-2}$$ ?

(a)  

The image shows the velocity-time graph of an object.

What is the total displacement of the object in m?

(a)  

What is the speed in km/h of the object from t = 10 hours to t = 18 hours?

(a)  

An object is dropped from a building. If g = 10 $$ms^{-2}$$ , and it took 2.5 seconds for the object to reach the ground, what is its speed in m/s just before hitting the ground?

(a)  

An object is dropped from a building. If g = 10 $$ms^{-2}$$ , and it took 2.5 seconds for the object to reach the ground, we have found that its speed before hitting the ground is 25 m/s.

How tall is the building in meters?

(a)  

When an object is falling in air with considerable air resistance, it accelerates until it reaches a constant speed.

This constant speed is called the (a)   .

The unit for weight is (a)   .

If the mass of a rock is 300 g, and the gravitational field strength on Earth is 10 N/kg, what is its weight on Earth in newtons?

(a)  

A cube with side length 4 cm has a mass of 3.2 kg. Calculate its density in kg/ $$m^3$$

(a)