Force 1
A force that opposes motion
Friction
What force is caused by gravity acting on a mass?
Weight or gravitational force
Thrust on a car is 600N. Resistive Forces are 400N.
What is the Resultant Force?
200 N
If Ken drove his motorboat a distance of 1000 m in 7.04 s, how fast was his boat moving?
142 m/s
In the lab, we want to measure the speed of a toy car. The time taken to cover this distance is listed on the:
a. x-axis
b. y-axis
c. z-axis
a. x-axis
What force keeps the Earth in orbit?
Gravity
The engine force of a car is 1000 N.
Friction is 200 N.
Air resistance is 250 N.
What is the Resultant force?
550 N
Odd one out: Tension, Kinetic, Weight, Friction
Kinetic
A car travels at 20 m/s for 30 s. How far did it go?
600 m
In the lab, we want to measure the speed of a toy car. The distance covered by the car is listed on the:
a. x-axis
b. y-axis
c. z-axis
b. y-axis
Force that acts upwards in water
Upthrust
F = m x a - whose Second Law is this? (DOUBLE)
Newton's Second Law of Motion
I am underwater. Upthrust is 1000 N and weight is 900 N.
What happens?
I move upwards
If a pitcher threw a fastball at 9 m/s, how long would it take the ball to travel 90 m?
10 s
On a line graph the x-axis will be the
a. independent variable
b. dependent variable
c. it does not matter
a. independent variable
Mass is measured in ?
Weight is measured in ?
Tension is measured in ?
Speed is measured in ?
Kg
N
N
m/s
Magnetic, electrostatic and gravitational are non-contact forces. What separates the first two from the third?
They can attract and repel, gravitational force only attracts.
Correct the sentence:
SCALAR quantities have SIZE and DIRECTION but VECTOR quantities have SIZE only.
VECTOR quantities have SIZE and DIRECTION but SCALAR quantities have SIZE only.
A bullet is shot from a rifle with a speed of 720 m/s. What time is required for the bullet to strike a target 3240 m away?
4.5 s
On a line graph the y-axis will be the
a. independent variable
b. dependent variable
c. controlled variable
b. dependent variable
What is the proper name for the overall force acting on a body?
Resultant force
Friction
Air resistance
Tension
Normal reaction
On holiday on Mars, gravity is 1.6 N/kg. I have a mass of 80 kg. I eat 10 kg of pies. What is my new weight?
144 N
A car moves with an average speed of 60 km/h. How far will it travel if it continues this average rate for 4 h?
240 km
In a distance-time graph what does a straight horizontal line represent? (double)
a. accelerated motion
b. zero speed
c. constant speed
b. zero speed