GRADE 12 TERM 1 PHYSICS REVIEW BY TALIA

The common method of testing a device adjustment (accuracy) is...

• Device Beeping

• Two readings calibration

• Viewing angle

• One reading calibration

Which of the following is a unit for a basic quantity in the international system of units?

• Ampere (A)

• Volt (V)

• Tesla (T)

• Ohm

"In any chemical reaction or physical changes, the mass of the matter remains constant," this is statement is called the:

• Conclusion of conservation of mass

• Theory of mass

• Law of conservation of mass

• Hypothesis of conservation of mass

which of the following phrase represents vector?

• Speed of car is 100 km/h

• Leen pushes the box with 60 N

• Ahmed skates a distance of 20 m to the north

• the temperature at night is 20 degrees C

If you measure the mass of the ball that has actual mass 2 kg, and your readings are 1.3 kg, 1.6 kg, and 2.4 kg. The true description for your results is

• accurate

• precise

• accurate but not precise

• not accurate and not precise

If a motorcycle moves at a constant speed of 6 m/s, what is the distance covered in 5 seconds?

• 6m

• 12m

• 10m

• 30m

Answer explanation

Remember: Distance= speed x time

The absolute value of the slope of the position-time graph is:

• Distance

• Velocity

• Speed

• Postition

The change in an object's position divided by the time for this change is...

• average velocity

• acceleration

• angular velocity

• instantaneous speed

acceleration is:

• the change in position divided by time

• the change in velocity divided by time

• the change in displacement divided by time

• the change in position in specific direction

If a race car's accelerating speed is from 4 m/s to 24 m/s in 4 seconds, then its acceleration in m/s^2 equals:

• 5 m/s^2

• 8 m/s^2

• 9 m/s^2

• 11 m/s^2