Answer:
PART A)
External force will be 75 N
PART B)
distance moved will be 1.125 m
Explanation:
PART A)
Given that net force on the mower is
now we also know that friction force due to ground is given as
now we have
so external force will be 75 N
PART B)
deceleration due to friction when external force is removed from it
now we can find the distance by kinematics
so the distance moved will be 1.125 m
Answer:
momentum , decreased , increase
Explanation:
I don't know if this is the answer your lurking for
If an object has a density greater than the liquid in which it is placed it will sink.
Explanation:
Density of the object can be known by its mass and volume.
If two objects have same volume but different masses it means the one having more mass will have higher density. Density is amount of mass per unit volume.
Objects that are tightly packed have higher density.
According to Archimedes' principle when a body is fully immersed that an upward buoyant force is equal to weight of the fluid that object displaces.
Because sound travels faster in solids than in the air.
hope this helps.
Answer:
Question 1: D
Question 2:D
Explanation:
Question 1: D
Question 2
mass=m=65kg
Acceleration due to gravity=g=9.8m/s^2
Height=h=7 meters
Potential energy=m x g x h
Potential energy=65 x 9.8 x 7
Potential energy=4459 joules