Answer:
It would take the cyclist 2 hours to cycle to school.
Explanation:
5km/hr for 2 hours would be 10km.
4. 1 and 2 only.
1. the downward force is the force of gravity.
<span>2. The upward force exerted is the Normal reaction from the floor.</span>
Answer:7.93 m/s
Explanation:
Given
mass of ball
Mass of hanging ball
Length of string
Maximum angle turned
is the initial velocity of ball 1 and 0 is the initial velocity of ball 2
For Perfectly elastic final velocity of ball 1 and 2 is given by
where and are the velocity of 1 and 2 before collision
thus
By energy conservation on second ball we get
Kinetic energy=Potential Energy
thus
They use sound waves that bounce off walls, and other things back to them to feel where they are going.
Answer:
attracted
Explanation:
Electrons are negative.
A positively charged object will attract a negatively charged object