A motorcycle moving at 8 m/s accelerates at a constant 3 m/s² for 4 s. Calculate its final velocity, in m/s.
Here is a van driving at a steady 7 m/s. The driver hits the accelerator and holds it for a 20 m stretch of road, accelerating at 3 m/s². How fast is the van moving at the end of the stretch?
First, write down the values from the question, and mark the one you want.
Next, choose an equation. Previously, you've calculated a final velocity with v = v₀ + at — but it doesn't work here: we have v₀ and a, but not t.
Luckily, there's a third equation we can use.
A rowing boat accelerates from 2 m/s to 5 m/s over 21 m. In v² = v₀² + 2aΔx, which of the boat's numbers plays the part of v₀?
Later, the driver hits the brakes: the van slows from 13 m/s to 5 m/s over 18 m. Write the five-quantity table for this stretch.
Write down the values in the question:
v = 5 m/s
v₀ = 13 m/s
Δx = 18 m
No time is given, and none is asked for.
The question doesn't give a. That's the unknown to find.
The table reads: v = 5 m/s, v₀ = 13 m/s, Δx = 18 m, a = ? (find this). No time is given.
A cyclist speeds up from 4 m/s to 9 m/s down a slope of known length. No stopwatch was running. Which equation lets you find the cyclist's acceleration from exactly these numbers?
A boat slows from 8 m/s to 3 m/s while covering 44 m. In v² = v₀² + 2aΔx, which of the boat's numbers plays the part of Δx?
Four students write down the no-time kinematic equation from memory. Who has it right?