Free Printable UNIT 1 Pre-Test

1.

Quantity that have magnitude ONLY

a)

size

b)

vector

c)

scalar

d)

scaler

2.

Quantity that has BOTH magnitude and direction

a)

size

b)

vector

c)

scalar

d)

scaler

3.

A single vector is represented by

a)

an arrow

b)

a line

4.

The vector $\overrightarrow{AC}$ is equal to

a)

a + c

b)

a + b

c)

a + b + c

d)

none of the above

5.

Which vector is equivalent to the equilibriant of $\overrightarrow{AC}$ ?

a)

$\overrightarrow{FD}$

b)

$\overrightarrow{DF}$

c)

$\overrightarrow{DA}$

d)

none of the above

6.

Two bodies tug on a box as depicted by the diagram. One body pulls to the left with a velocity of 10m $s^{-1}$ , and the other tugs to the right with a velocity of 18m $s^{-1}$ . State the resultant vector

a)

$8ms^{-1}$

b)

$8ms^{-1}$ to the left

c)

$8ms^{-1}$ to the right

d)

Undefined

7.

Which of the following is NOT an equation for uniformly accelerated motion?

a)

$v^2\ =\ u^2\ +2at$

b)

$v\ =\ u\ +\ at$

c)

$s\ =\ ut\ +\ \frac{1}{2}at^2$

d)

$s\ =\ \frac{1}{2}\ \left(u\ +\ v\right)t$

8.

A pendulum is held at its highest point and then released. A suitable graph to show one cycle of this motion is

a)

b)

c)

d)

9.

The rubber ball of weight, W, is suspended from a support and is being displaced laterally at an angle,

\theta\degree

, from the vertical by a wind of constant force, H. The ball is in equilibrium and the tension in the string is T. Which of the following equations is correct?

a)

$T\ =\ W$

b)

$T\ =\ H$

c)

$T\ =\ \frac{W}{\cos\ \theta}$

d)

$T\ =\ \frac{H}{\cos\ \theta}$

10.

The following diagram shows a plank in equilibrium when acted on by the forces P, T and W. From the diagram, which of the following statements would be true ? [HINT: remember you can choose different pivots to solve any moments question]

I. $T\ +P\ =\ W$

II.

P\ \left(x+y\right)\ =\ Wy

III.

Px\ =\ Ty

a)

I only

b)

I and II only

c)

II and III only

d)

I, II and III

11.

A ball is thrown vertically upwards and then caught at the same level from which it was thrown. Which of the following graphs would BEST represent the variation of the ball's acceleration with time?

a)