Answer:
712.5 kg m/s
Explanation:
Work out the total momentum before the event (before the collision):
p = m × v
Massof Deon = 95kg
Velocity =7.5m/s
Mass of Chuck = 120kg
Velocity = 0m/s
Momentum of Deon before = 95 × 7.5 = 712.5 kg m/s
Momentum of Chuck before = 120 × 0 = 0 kg m/s
Total momentum before = 712.5+ 0 = 712.5 kg m/s
Working out the total momentum after the event (after the collision):
Because momentum is conserved, total momentum afterwards = 712.5 kg m/s
Answer:
12s
Explanation:
the formula is
s = u×t + 0.5×a×t²
where:
s is the displacement of the object at this time (so it's equal to 0)
u is the initial speed
t is the time you have to find
a is the acceleration due to gravity
Answer:
Physical quantities are the substances which can be measured. By measuring physical quantities, we can measure the mass, weight and other physical properties
Weight = (mass) x (acceleration of gravity).
On Earth, acceleration of gravity = 9.8 m/s² (rounded)
On Earth, 2.2kg of mass weighs (2.2kg) x (9.8 m/s²) =
21.6 kg-m/s² = <em>21.6 Newtons</em>.
(That's about 4.85 pounds.)
