Change in momentum and Impulse

Work out the changes in momentum in the following cases:

a a mass of 3 kg slows from 3 m/s to 1.5 m/s (2 marks)

A particle undergoes a displacement Δr⃗ of magnitude 54 m in a direction 42 ∘ below the x axis. Express Δr⃗ in terms of the unit vectors x^ and y^.

Arrange the steps in order to describe what happens to a gas when it cools

What is the term when a tennis game is tied at 40-40?

The oxidation number of all metals on the periodic table have a positive (+) charge. Which of these best explain why?

Rust forms from the reaction of a metal with oxygen; this is an example of a synthesis reaction. True False

True or False? Gases such as water vapor condense when they are * heated*.

If a chromosome on unfolds itself how is transcription enhanced

Two friends, barbara and neil, are out rollerblading. with respect to the ground, barbara is skating due south at a speed of 5.9 m/s. neil is in front of her. with respect to the ground, neil is skating due west at a speed of 1.4 m/s.

What process is used when the sun transfers light to plants A. conduction B. radiation C. convection D. all of these

Which wave characteristic has the unit hertz