U7: Challenge

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time. It is a vector quantity, meaning it has both magnitude and direction.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) can be calculated using the formula: a = (final velocity - initial velocity) / time.

Front

What is tension in a string?

Back

Tension is the force exerted along the length of a string, rope, or cable when it is pulled tight by forces acting from opposite ends.

Front

How do you calculate the net force acting on an object?

Back

Net force can be calculated using the formula: Net Force = mass (m) x acceleration (a).

Front

What is the role of mass in determining acceleration?

Back

According to Newton's second law, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What is the significance of neglecting drag and friction in physics problems?

Back

Neglecting drag and friction simplifies calculations by assuming that only the forces of interest are acting on the system, allowing for a clearer analysis of motion.

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object and is calculated as Weight = mass (m) x gravitational acceleration (g).

Front

What is gravitational acceleration on Earth?

Back

Gravitational acceleration on Earth is approximately 9.81 m/s².

Front

How do you determine the unknown mass in a system with tension and acceleration?

Back

You can use the equation: Tension = mass (m) x (gravitational acceleration - acceleration of the system).

Front

What is the formula for calculating the tension in a string with a hanging mass?

Back

Tension (T) can be calculated using the formula: T = m(g - a), where m is the mass, g is gravitational acceleration, and a is the acceleration of the mass.