Purpose: Your teacher uses this to identify gaps before the unit test. Be thorough — show all work and reasoning.
📋 Formulae Provided
\( v = v_0 + at \) | \( d = v_0 t + \tfrac{1}{2}at^2 \) | \( v^2 = v_0^2 + 2ad \) | \( \Sigma F = ma \) | \( f = \mu N \) | \( F_c = mv^2/r \)
Knowledge & Understanding Check
Question 1 [3 marks]
A \( 12 \text{ kg} \) box is on a ramp inclined at \( 25° \). The coefficient of static friction is \( 0.40 \).
a) Draw a free body diagram showing all forces on the box.
b) Calculate the component of gravity parallel to the ramp.
c) Will the box slide? Justify with a calculation.
Thinking & Problem Solving
Question 2 [4 marks]
A car travels around a flat circular track of radius \( 100 \text{ m} \). The maximum static friction coefficient between the tires and road is \( 0.60 \).
a) Derive the maximum speed the car can travel without sliding.
b) If the track were banked at \( 20° \) with no friction, what speed would keep the car on the track?
0 words
Reflection
Question 3
Which topic from Unit 1 do you find most challenging? Explain what specifically confuses you and what steps you've taken to address it.