1. Copy and fill in the blanks: a. The speed of an object can be calculated by dividing taken.
travelled by b. A
whereas a and
c. The tells us the
quantity has magnitude only, has both magnitude
.
of a distance–time graph of the object.
d. Acceleration can be calculated by dividing change in
by .
e. When an acceleration takes place in the same direction an object is moving in, the object
. When the
acceleration takes place in the opposite direction, the object This is also known as
.
f. Forces can change an object’s shape, ,
and or
Motion up and down
.
g. Any object that is able to restore its shape after it has been known as an include
object. Examples and h.
objects are placed in to motion.
is a force that occurs when two . It is a
i. Pressure in liquids increases with .
j. The air around us exerts a pressure known as
.
2. If you could drive to the Sun at a speed of 88.5 km/h, it would take around 193 years. Based on these figures, calculate how far away we are from the Sun.
3. Use labelled diagrams to explain the force interaction pairs occurring when: a. You are sitting upright on your laboratory chair.
b. A child bounces up and down on a trampoline.
c. You kick a rugby ball. d. A chef cuts an onion with a knife. e. A rocket takes off from a space centre. f. A landing module enters the Mars atmosphere.
Contact forces Non-contact forces
7. Copy and complete this table: Object
A B C D
3.9 35
72 70
Which of the objects listed would: a. Float. b. Sink in water.
Density (g/cm3) Mass (g) Volume (cm3) 180
25 15 90
. is
5. If a Formula 1 car can accelerate from rest at 25 m/s2, calculate how fast it would be moving after 10 seconds.
6. Copy the funnel diagrams and place the names of the relevant contact and non-contact forces discussed in this chapter in the correct funnel.
.
4. Copy the Venn diagram and insert the letters for the following forms of motion into the correct position. a. Driving a car from Waterford to Cork. b. A skateboarder skating through a half-pipe. c. Riding a rollercoaster. d. Running on a treadmill. e. A space rocket taking off from the Earth. f. Hitting a tennis ball horizontally across a tennis net.
