Answer:
e. Only(a) and (b) above are correct
Explanation:
Impulse
= Fx t = m ( v-u )
v-u = change in velocity
F x t = mass x change in velocity
change in velocity = F t / mass
=a t
change in velocity ∝ t ( time ) , if a is constant
dv = a_avg dt
∫dv = a_avg ∫dt
v-u = a_avg t
change in velocity ∝ t ( time )
So both (a) and (b) are correct.
Answer:
yes spring tides are the highest and lowest tides.
Explanation:
Answer:
Force = -4N
Explanation:
Given the following data;
Mass = 1kg
Initial Velocity = 20m/s
Distance = 50m
To find the acceleration;
We would use the third equation of motion;
Since, it comes to rest, its final velocity is zero (0).
V² = U² + 2as
Substituting into the equation, we have;
0 = 20² + 2*a*50
-400 = 100a
a = -400/100
a = -4m/s²
Now to find the force exerted
Force = mass* acceleration
Force = 1*(-4)
Force = -4N
Answer:
-1.3 m/s
Explanation:
It won't allow me submit, so be good to check the attachment