Removal Examination in General Physics 1

Pheromone is a substance emitted by ants while they travel so that others may be able to follow exactly the same direction as the others took. If a zoologist is to measure the distance an ant travels and in what particular direction does it take, how would this quantity be classified?

• Equilibrant

• Scalar

• Magnitude

• Vector

Which one of the following is not a fundamental quantity?

• length

• mass

• time

• weight

A vector quantity is usually represented by an arrow. Which among the following is the main reason for the representation?

• A vector has only direction.

• A vector has magnitude only represented by the length of the arrow.

• A vector has magnitude represented by the arrow head and direction represented by the arrow tail.

• A vector has magnitude represented by the length of the arrow and direction represented by the arrow head.

0.000 000 345 written in scientific notation is

• 3.45 x 10^-6

• 3.45 x 10^-7

• 3.45 x 10^-8

• 3.45 x 10^-9

4 x 10^0 in decimal form is

• 4

• 40

• 400

• 4 000

If a ball is thrown with a velocity of 25 m/s at an angle of 37° above the horizontal, what is the vertical component of its velocity?

• 15 m/s

• 18 m/s

• 20 m/s

• 25 m/s

Which method of adding vectors is otherwise known as the tip-to-tail method?

• component method

• graphical method

• parallelogram method

• polygon method

In a coordinate system, a vector is oriented at angle with respect to the y-axis. The y component of the vector equals the vector's magnitude multiplied by which trigonometric function?

• cos

• cot

• sin

• tan

The component that lies along the y - axis is called the

• eastward component

• horizontal component

• upward component

• vertical component

A computer printer has a width of 18 in. What is its width in meters?

• 0.46 m

• 0.56 m

• 0.65 m

• 0.71 m