Complete the sentences using words from the word list. (Choose from: mass, weight)
The force of gravity acting on an object causes the object to have .

Complete the sentence. Choose the best two endings from this list.
We have evidence for the effects of gravity because:

Look at the diagram of a Solar System.
The black arrows show the direction of movement of each planet.

The orange arrows show the direction of the force of gravity acting on each planet from the star.
Which planet, A, B, C or D, does not have the arrows correctly marked?

Look at the diagram of a Solar System.
The black arrows show the direction of movement of each planet.

The orange arrows show the direction of the force of gravity acting on each planet from the star.
Which planet, A, B, C or D, does not have the arrows correctly marked? Explain your answer.

Weight and mass are connected by the equation $W=m\times g$. An object has a mass of $60 \mathrm{kg}$. Assume that the strength of gravity, $g=10 \mathrm{N} {\mathrm{kg}}^{-1}$.
What is the weight of the object on Earth? Show your working.

 

Weight and mass are connected by the equation $W=m\times g$. An object has a mass of $60 \mathrm{kg}$. Assume that the strength of gravity, $g=10 \mathrm{N} {\mathrm{kg}}^{-1}$.
On the Moon, which quantity from the equation stays the same compared to Earth? Choose the best answer.

The forces on an object can be _____ together. (Choose from: multiplied, added, difference, resultant, balanced, unbalanced)
 

The total force is called the _____ force. (Choose from: multiplied, added, difference, resultant, balanced, unbalanced)

If the total force is zero, all the forces are _____. (Choose from: multiplied, added, difference, resultant, balanced, unbalanced)