Answer:
148(m/s)
Explanation:
V_final = V_current + (acceleration) x (time)
= 4 + 80 x 1.8 = 148 (m/s)
Answer:
6.65m/s
Explanation:
Using the equation of motion
S = ut + 1/2gt²
S is the height of fall
t is the time
u is the horizontal velocity
g is the acceleration due to gravity
Given
S = 300 + 50
S = 350m
t = 7.8seconds
g = 9.8m/s^2
Get S
S = 7.8u + 1/2(9.8)(7.8)²
S = 7.8u + 298.116
350 = 7.8u + 298.116
7.8u = 350 - 298.116
7.8u = 51.884
u = 51.884/7.8
u = 6.65m/s
Hence the rock's horizontal velocity was 6.65m/s
B)is pills everything to the surface of the earth not sure about A
<span>You are given the 560 J of work of a man used while pushing a shopping cart down an aisle that is 15 m long. You re asked to find how much force he used. The equation is W = Fd where W is work, F is force and d is distance.
W = Fd
560J = F(15m)
F = 37.33 N
The answer is letter B.</span>
Answer:
velocity of combined objects is 6 m/s
Explanation:
As per law of conservation of momentum
total momentum before collision = total momentum after collision
since the two objects sticks together after collision so we will have
Now plug in all values in it
so the missing value in the table is velocity which is 6 m/s
