Answer:m=80 kg
Explanation:
Given
mass of Person
When Person Steps From boat onto shore boat moves away to 0.6 m/s away from shore
let v be the velocity of Person and m be the mass of boat
Conserving momentum
----1
When Person step on to boat, boat moves on to left 0.4 m/s towards left
---------2
using 1 and 2
therefore
Answer:
The value is
Explanation:
Generally the velocity attained by the sled after t = 3.10 s is mathematically evaluated using the kinematic equation as follows
Here u = 0 \ m/s
a = 13.5
So
=>
The is distance it covers at this time is
=>
=>
Now when sled stops its the final velocity is while the initial velocity will be the velocity after its acceleration i.e
So
Here , the negative sign shows that it is deceleration
So
=>
The gun acts on bullet with a force, just like the bullet acts with force on gun.
When the bullet shoots out the gun moves backward.
Hope this helps.
Answer:
A = 70cm³
B= 805 grams
Explanation:
(a) V = L×B×H
= 7cm × 5cm × 2cm
= 35cm × 2cm
= 70cm³
(b) Mass= volume × Density
= 70cm³ × 11.5g/cm³
=805 grams
I hope this will help you ...