Question 1.
- mass = 4500 kg
- potential energy (p.e) = 67500 J
now, we know :
=》

=》

=》

=》

=》

note : if we take acceleration due to gravity as 9.8, then height = 1.53 m
Question 2.
- mass = 4500 kg
- kinetic energy = 63000 j
we know,
=》

=》

=》

=》

=》

=》

or
=》

Answer:
Left
Explanation:
The force is applied opposite of the acceleration.
Answer: D. decreasing the temperature
Explanation:
Answer:29 electrons
Explanation: If you look on a periodic table, the atomic number is the amount of electrons it has.
I'm not from that school but I can help you.