Standard Science Primary 6 Interactions

A stone is thrown vertically upwards. Which of the following shows the forces acting on the stone at its highest point?

A No forces are acting on it
B Only the upward force from the hand
C Only gravitational force
D Gravitational force and upward force
Show Worked Solution

Worked Solution

Step 1: Once released, the stone is only influenced by gravity (ignoring air resistance). Step [2-9]: At the highest point, the stone is momentarily stationary, but gravity still pulls it down. Step [2-9]: Gravity is a non-contact force that always acts on the stone.

Correct answer: Only gravitational force

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