Physics Quiz 1 Abbas

1. What is the SI unit of length?

• cm

• km

• m

• mm

Express 0.00045 in scientific notation

• A) 4.5 × 10⁻⁴

• B) 4.5 × 10⁻³

• C) 45 × 10⁻⁵

• D) 0.45 × 10⁻³

3. How many significant figures are in 0.0520?

• A) 2

• B) 3

• C) 4

• D) 2 or 3

4. Convert 3.2 km to meters.

• A) 3200 m

• B) 32,000 m

• C) 3.2 × 10³ m

• D) A and C

5. What is the prefix for 10⁻⁶?

• A) milli

• B) micro

• C) nano

• D) kilo

6. Which is a base SI unit?

• A) Newton

• B) Joule

• C) Second

• D) Watt

7. A velocity-time graph with zero slope indicates:

✅

• A) constant speed

• B) zero acceleration

• C) constant acceleration

• D) zero velocity

8. Newton’s First Law is also called:

• A) Law of Acceleration

• B) Law of Inertia

• C) Action‑Reaction Law

• D) Law of Gravitation

The greater the mass of an object,

• the easier the object starts moving.

• the greater its inertia.

• the more balanced it is.

• the more space it takes up.

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Who is the scientist who came up with the Laws of Motion?

• Sir Isaac Newton

• The Greeks

• John Dalton

• Sir John Newt

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