Vectors and Scalars
Motion
Which Law?
Forces
Maths Practice
100
What is a scalar quantity?
A quantity with magnitude but no direction.
100
What is the formula for speed?
v=d/t
100
For every action there is an equal and opposite reaction. Which law?
Newton's 3rd Law
100
What is a force defined as?
What is a push or pull that can change the motion of an object?
100
What is the speed of a bicycle that travels 50 m in 5 s (include units)?
v=d/t
10 m/s
200
What is a vector quantity?
A quantity with magnitude and direction
200
What is the formula to calculate acceleration?
a=(v-u)/t
200
Which of the following is the equation to Newton's 2nd Law of Motion? A. F=g* t B. F=m*a C. F=d/t D. F=m*v
What is B. F=m*a
200
Which is a common force acting to slow down an objects in motion? A. Tension B. Acceleration C. Speed D. Friction
What is D. Friction
200
What is the acceleration of an object that takes 20 s to speed up to 20m/s from rest? (include units)
a=(v-u)/t
1 m/s2
300
List 3 Scalar Vectors
time, distance, length, speed, temperature, mass, etc.
300
Between what two points is the students walking the slowest?
A-B
300
A little girl has been pulling a sled behind her in the snow and she is crying because when she stopped the sled kept moving and hit her in the back of her legs. Which Law ? A. Newton's 2nd Law B. Newton's 3rd law C. Newton's 1st Law
C. Newton's 1st Law
300
What is the resultant force?
20 N right
300
What is the mass of an object that weighs 90 N on Earth (g=10m/s2) (include units)
w=mg
9 kg
400
A student walks once around the perimeter of the playground. What is their distance and displacement.
Distance: 90 m
Displacement: 0 m
400
Which section of the following graph would show a car coming to a red light?
Section D
400
A pitched baseball goes faster than one that is gently thrown. Which Law? A. Newton's 1st Law B. Newton's 2nd Law C. Newton's 3rd Law
B. Newton's 2nd Law
400
Which of the following objects has the least acceleration? A. An empty shopping cart pushed with a hard force B. A full shopping cart pushed with a hard force C. An empty shopping cart pushed with a light force D. A full shopping cart pushed with a light force
What is D. A full shopping cart pushed with a light force
400
How fast is a 5 kg cart accelerating if it's pushed with 250 N of force? (include units)
F=ma
50 m/s2
500
If a student is walking around in a circle at a constant pace, what happens to their speed and velocity?
Their speed stays the same while their velocity constantly changes.
500
Which of the following graphs represents a car travelling on a motorway with cruise control on.
top left graph
500
An ice skater pushes harder with his leg muscle, then he begins to move faster. Which law? A. Newton's 3rd Law B. Newton's 2nd Law C. Newton's 1st Law
What is B. Newton's 2nd Law
500
Would a person have more mass on Earth or on the moon?
neither, mass doesn't change
500
How far has a student travelled if their speed changed from 10m/s to 20m/s at an acceleration of 3 m/s2? (include units)
x = (v^2-u^2)/(2*a)
50 m