Page 69 - York Global Science 6 - Physical Science
P. 69
Physical Science
Forces, Motion and Scale Objectives
At the end of this chapter, I will be able to:
➜ ➜ Calculate the speed of an object (using the formula: speed = distance ).
time
➜ ➜ Explain what a distance-time graph shows.
➜ ➜ Explain relative motion.
➜ ➜ Calculate relative speeds.
➜ ➜ Say what forces are.
➜ ➜ Use force arrows to show the difference between balanced and unbalanced
forces and what happens to objects because of them.
➜ ➜ Explain the difference between contact and non-contact forces.
➜ ➜ Explain how gravity works.
➜ ➜ Explain the difference between mass and weight.
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