Answer:
Distance per unit time
Explanation:
Speed is the rate at which someone or something is able to move or operate.
Answer:
Explanation:
Can you help me in mathematics
Work+Force*Distance. Rearranging, F=W/d. Calculating, the force must be 0.0215 N.
Answer:
The resultant force will be 5 N in the South West Direction.
Explanation:
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Tip:</u></h3>
If we have two vectors A and B, their resultant is:
is the angle between A and B
Since, Force is a vector quantity, the answer to he given diagram will be thought out by Vector Laws of Addition.
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Solution:</u></h3>
6N and 9N are in opposite directions, so their resultant will simply be their difference, and it will be pointing in the direction of the vector with larger magnitude.
= 9 - 6
<em>= 3 N</em>
Now, we have two vectors. one of magnitude 4N pointing towards West and the other of magnitude 3N pointing towards South.
- They're at an angle of 90°. (=90)
- Their resultant will lie in between the two vectors, 4N and 3N.(The South West Direction).
It's magnitude will be equal to
<em>(as cos90=0, we're left with the sum of the squares of the two vectors)</em>
= 5N
Therefore, the resultant force will be <u>5N</u> towards the South-West.
Answer
given,
mass of the drop, m = 0.0014 g
speed of the drop, u = 8.1 m/s
a) Change in momentum is equal to impulse
final velocity of the drop, v = 0 m/s
J = m ( v - u )
J = 0.0014 x 10⁻³ x ( 0 - 8.1 )
J = -1.134 x 10⁻⁵ kg.m/s
impulse of the roof = - J = 1.134 x 10⁻⁵ kg.m/s
b) time, t = 0.37 m s
impact of force = ?
we know
J = F x t
1.134 x 10⁻⁵ = F x 0.37 x 10⁻³
F = 0.031 N
the magnitude of the force of the impact is equal to F = 0.031 N