Science Y 5-6 December Examination 2021

Scalar is a physics quantity that only has __________.

• size

• direction

• mass

Vector is a physics quantity that has ________ and ________.

• size, direction

• direction, mass

• size, weight

A car covers a distance of 250 meters in 50 seconds. What is the velocity of the car?

• 5 m/s

• 10 m/s

• 15 m/s

A Force has 3 elements:

They are ________, _________ and ________.

• acting point, magnitude, direction

• acting point, magnitude, mass

• acting point, mass, direction

Is this force diagram correct or incorrect?

• Correct

• Incorrect

This is the equation for acceleration. What do the Vf, Vi and t stand for?

• Vf = final velocity

  Vi = initial velocity

  t = time

• Vf = first velocity

  Vi = initial velocity

  t = test

A cyclist accelerates from 0m/s to 10m/s in 5 seconds. What is his acceleration?

a = Vf - Vi / t

• 2 m/s squared

• 3 m/s squared

• 5 m/ s squared

What is the symbol for acceleration due to gravity?

• g

• h

• k

Inertia is when an object resists change to its original motion

• True

• False

What is Newtons First Law?

• Any object in motion will continue in the same direction and speed unless acted on by a force

• An object in motion will stop motion when a force acts on it