Question detail

A ball has momentum 18 kg m/s and mass 3 kg. What is its velocity?

Try the question, check the answer, then read the explanation to understand the curriculum point.

Show answer Topic hub Objective page

At a glance

MCQ

Type

practice

Style

Topic

Forces and motion

Question

A. The velocity is 6 m/s because momentum is divided by mass.
B. The velocity is 54 m/s because momentum is multiplied by mass.
C. The velocity is 21 m/s because the values are added.
D. Velocity cannot be calculated from momentum and mass.

Answer

The correct answer is: The velocity is 6 m/s because momentum is divided by mass.

Explanation

The correct option is The velocity is 6 m/s because momentum is divided by mass.. This fits Uniform acceleration (HT only) in Forces and motion because it uses the named force or motion relationship in the situation, gives the correct unit or graph meaning where needed, and avoids the specific misconception in the distractors.

Common mistake

Common Mistake in Calculating Acceleration

Students often confuse the variables in the equation v^2 - u^2 = 2as, leading to incorrect calculations of acceleration.

Ensure to clearly identify final velocity (v), initial velocity (u), and distance (s) before substituting into the equation.

Related flashcards

Flashcard 1 of 5

Press Space to flip, arrows to move