Review-Semester Exam-Vectors, Projectiles and Forces

Front

What is the acceleration of a ball at the top of its path when thrown straight up?

Back

-9.8 m/s² (due to gravity)

Front

If a force of 100N East and a force of 100N West act on a 5.0kg cart, what is the acceleration of the cart?

Back

0 m/s² (forces cancel each other out)

Front

A person walks 2m east, then 1m north, then 10m west. What is the magnitude of the displacement?

Back

8.06 m (calculated using the Pythagorean theorem)

Front

When a force of 100N acts on a mass of 10kg, what is the resulting acceleration?

Back

10 m/s² (using F=ma, where a=F/m)

Front

How does the inertia of a 200kg truck compare to that of a 100kg car?

Back

Twice as much (inertia is proportional to mass)

Front

Define 'vector'.

Back

A quantity that has both magnitude and direction.

Front

What is the formula for calculating acceleration?

Back

a = F/m (acceleration equals force divided by mass)

Front

What is the effect of gravity on a projectile at its peak height?

Back

The vertical acceleration is -9.8 m/s², acting downwards.

Front

Explain the concept of displacement.

Back

Displacement is the shortest distance from the initial to the final position, including direction.

Front

What is the difference between speed and velocity?

Back

Speed is scalar (magnitude only), while velocity is a vector (magnitude and direction).