The resultant force is 8N
Given that mass is 2kg , v= 40m/s, u =20m/s and we need to calculate resultant force
F=ma
m is given
so for a
v-u/t=a { first equation of motion }
40-20/4= 4
so a=4
F = ma =2*4 = 8N
The difference between the forces that are acting on an object as part of a system is known as the resultant force.
v = u + at is the first equation of motion. Here, v denotes the end speed, u the starting speed, an acceleration, and t the passage of time. The first equation of motion is provided by the velocity-time relation, which may be used to calculate acceleration.
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Answer:
The force exerted by the cart on Bonnie is - 18.0 N
Explanation:
Given;
weight of the cart, w = 195 N
Bonnie's applied force on the cart, F = 18.0 N
According to Newton's 3rd law, action and reaction are equal and opposite.
Thus, the cart will pull back at Bonnie with force of equal magnitude but in opposite direction.
The force exerted by the cart on Bonnie = - 18.0 N
Answer:
28,126pascal
Explanation:
Hydrostatic pressure exerted on the bottom of the tank can be calculated using the formula
P = hpg where;
h is the depth of the tank = 3.5m
p is the density of the kerosene = 820kg/m³
g is the acceleration due to gravity = 9.8m/s²
Substituting the values into the formula we have;
P = 3.5×820×9.8
P = 28,126Pascal
He turned his observations into laws, to establish constants and explanations of future scientists.
Answer:
Velocity of Gulf Stream=
west of north at a speed of 
Explanation:
Given
- speed of ship relative to Gulf stream=
west of north at a speed of 4 m/s
- speed of ship relative to earth=
west of north at a speed of 4 .8 m/s
Let
be the velocity of the ship relative to the earth and
be the velocity of the ship with respect to the Gulf stream
Let the west direction be negative x axis and north direction be positive x axis
Now

magnitude of the velocity is given by

Let the velocity of gulf stream makes an angle
with the positive y axis we have

Velocity of Gulf Stream
west of north at a speed of 