Metamorphosis that's all I know
M= 4kg
v= ?
momentum = Mv
so
12kgms-¹ = 4kg×v
v= 12÷4 = 3ms-¹
Answer:
0.5 secs
Explanation:
F = m( v - u) /t
Mass m = 1000kg
Velocity v = 40m/s because it came to rest
time t = ?
Force = 80kN
= 80 x 1000 = 80000N
Therefore,
80000 = 1000 x 40 /t
Cross multiply
t x 80000 = 40000
Divide both sides by 80000
t = 40000/80000
t = 0.5 secs
Answer:
95.9°
Explanation:
The diagram illustrating the action of the two forces on the object is given in the attached photo.
Using sine rule a/SineA = b/SineB, we can obtain the value of B° as shown in the attached photo as follow:
a/SineA = b/SineB,
83/Sine52 = 56/SineB
Cross multiply to express in linear form
83 x SineB = 56 x Sine52
Divide both side by 83
SineB = (56 x Sine52)/83
SineB = 0.5317
B = Sine^-1(0.5317)
B = 32.1°
Now, we can obtain the angle θ, between the two forces as shown in the attached photo as follow:
52° + B° + θ = 180° ( sum of angles in a triangle)
52° + 32.1° + θ = 180°
Collect like terms
θ = 180° - 52° - 32.1°
θ = 95.9°
Therefore, the angle between the two forces is 95.9°