Physics 7 Review

Which of the fllowing does not describe acceleration?

• A vehicle slowing down in an attempt to U-turn.
• Car B moves at a constant velocity along the highway.
• A fruit falling from a tree.

• A runner slowing down from 2.5 m/s to stop.

Which describes the difference between scalar and vector?

• Scalar quantities have magnitude and direction while vector quantities have magnitude only.
• Both scalar and vector quantities contain magnitude and direction.
• Scalar quantities have direction only while vector quantities have magnitude and direction.
• Scalar quantities have magnitude only while vector quantities both have magnitude and direction.

Your body mass is 40.0 kg. What is your equivalent weight?

• 39 N
• 390 N
• 392 N
• 392.0 N

Which of the following denotes a quantitative observation?

• The table's length is 1.50 m.
• Your hair smells like vanilla.
• The soup is sour.

• The mural is colorful.

How many significant figures are shown in this value: 840.010 m

• 5
• 6
• 4
• 3

This refers to the distance between two successive crests or troughs.

• wavelength
• frequency
• amplitude

• period

Calculate the sum of the following numbers and express the final answer in proper significant figures: 1.50 cm, 12.11 cm, 7.5 cm,0.552 cm

• 21.7 cm
• 21.66 cm
• 21.6 cm
• 22 cm

A type of wave that does not need a medium for propagation.

• mechanical wave
• transverse wave
• electromagnetic wave
• longitudinal wave

Which of the following shows a band of radiation arranged from decreasing frequency?

• radio waves, visible light, x-ray, gamma rays
• microwaves, visible light, x-ray, gamma rays
• gamma rays, visible light, x-rays, radio waves
• x-ray, visible light, infrared rays, radio waves

Calculate the given expression; 26.5 m 1.2 m

• 31.8 m²

• 32 m²

• 30 m²

• 31.80 m²