Question

gravity magnetism friction
an apple falling from a tree
the strip on a credit card
a compass pointing north
using the brakes in a car
using sandpaper to smooth a rough surface
a ball rolling and slowing down on a grass field
water falling off a cliff
slipping on an icy surface
getting an mri for an injury

Explanation:

• An apple falling from a tree: Gravity is the force that pulls objects towards the Earth.
• The strip on a credit card: Credit card strips use magnetism for data storage.
• A compass pointing north: Compasses work due to Earth's magnetic field (magnetism).
• Using the brakes in a car: Brakes create friction to slow down the car.
• Using sandpaper to smooth a rough surface: Sandpaper relies on friction to smooth surfaces.
• A ball rolling and slowing down on a grass field: Friction between the ball and grass causes it to slow.
• Water falling off a cliff: Gravity pulls water downwards.
• Slipping on an icy surface: Low friction on ice causes slipping.
• Getting an MRI for an injury: MRIs use magnetism to create images.

Answer:

An apple falling from a tree - gravity.
The strip on a credit card - magnetism.
A compass pointing north - magnetism.
Using the brakes in a car - friction.
Using sandpaper to smooth a rough surface - friction.
A ball rolling and slowing down on a grass field - friction.
Water falling off a cliff - gravity.
Slipping on an icy surface - friction.
Getting an MRI for an injury - magnetism.