Answer:
N = 148.10N
Explanation:
GIVEN
Weight =125 N
force = 35
angle =42°
since there is no vertical acceleration 
from
free body diagram
Answer: D
Explanation: Energy is neither created nor destroyed so the amount of reactants and products must be equal
Mass=density*volume
1*40=40g/0.04kg
Answer:
she will move in the same direction at the same speed forever.
Explanation:
If there are no outside forces like gravity the net force will never change, she will just keep flying for forever and ever! poor lady
Answer:
17.89 m/s
Explanation:
recall that one of the equations of motion can be expressed as:
v² = u² + 2as,
where
v = final velocity = given as 20 m/s
u = initial velocity = given as 7.0 m/s
a = acceleration. Since it is freefalling downwards, the acceleration it would experience would be the acceleration due to gravity = 9.81 m/s²
s = displacement (we are asked to find)
simply substitute the known values into the equation:
v² = u² + 2as
20² = 7² + 2(9.81)s
400 - 49 = 19.62s
19.62s = 351
s = 351/19.62
s = 17.8899
s = 17.89 m/s
