Projectile Motion Physics Concepts

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What is the difference between a scalar and a vector?

Scalar has magnitude only, while vector has magnitude and direction.

How can you calculate acceleration from a velocity-time graph?

By finding the gradient of the graph.

What is the acceleration of free fall on Earth?

9.81 m/s^2

What is the relationship between displacement and distance?

Distance is the total length moved irrespective of direction, while displacement is the shortest distance in a certain direction. Signup and view all the answers

How can a force vector be split into its components?

A force vector can be split into its vertical and horizontal components, which are independent. Signup and view all the answers

What does the Pythagorean theorem help with in physics?

The Pythagorean theorem (a^2 + b^2 = c^2) and vector parallelograms can add coplanar vectors. Signup and view all the answers

What is the formula for linear momentum?

p = mv Signup and view all the answers

What principle states that total momentum remains constant in a system with no external forces?

Principle of Conservation of Linear Momentum Signup and view all the answers

Define perfectly inelastic collision.

Only momentum is conserved, and the particles stick together after the collision. Signup and view all the answers

What happens in inelastic collisions?

Total energy is conserved, but kinetic energy may be converted into other forms. Signup and view all the answers

What is the formula for weight?

W = mg Signup and view all the answers

What is the formula for force in terms of momentum change?

F = ma Signup and view all the answers

State Newton's First Law of Motion.

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an external force. Signup and view all the answers

What does the rate of change of momentum of a body depend on according to Newton's Second Law?

The rate of change of momentum of a body is proportional to the resultant force acting on it and occurs in the direction of that force. Signup and view all the answers

Explain Newton's Third Law of Motion with an example.

For every action, there is an equal and opposite reaction. When a body A exerts a force on body B, body B exerts an equal but opposite force on body A. Signup and view all the answers

Describe the motion of a skydiver as they fall.

A skydiver's vertical velocity initially increases at a constant rate due to acceleration from gravity. As air resistance increases, their vertical velocity eventually reaches a constant value. Signup and view all the answers

What happens in an elastic collision between two identical spheres when one is initially moving with speed v and the other is stationary?

In an elastic collision, after the collision, the sphere initially at rest gains speed v, and the initially moving sphere comes to a stop. Signup and view all the answers