Answer:
27 mph
Explanation:
9:45 to 11:45 = 2 hours
odometer says you traveled 54 miles in 2 hours or 27 mph
Answer:
1,373.4 N
Explanation:
The mass of the table acts at the centre in addition to the books since that is the centre of gravity of the table.
Mass of books will be 10kg+20kg+30kg=60 kg
Total mass of table and books will be 500kg+60kg=560 kg
This mass is evenly distributed into the four legs hence 560kg/4 legs=140 kg per leg
Force is product of mass and acceleration due to gravity hence F=gm
Taking g as 9.81 m/s2 then
F=140*9.81=1,373.4 N
Therefore, rhe normal force is equivalent to 1,373.4 N
Answer:
Kinetic
Explanation:
Potienal is building up power where kinetic means moving
Answer:
25 joule.
Explanation:
solution
here,
given
mass =0.2 kg
speed or velocity = 7m/s
kinetic and mechanical energy =10 m
mechanical energy = ?
now,
kinetic energy = 1/2 = m * (v)2
= 1/2 = 0.2kg * (7)2
= 1/2 = 10
=5J
hence , total kinetic energy of the bird is (5+10)=15J
again,
we have,
mechanical energy =kinetic energy + potential energy
= (15+10)J
= 25J
hence, the mechanical energy of the bird is 25J.
here ,some formula and unit related to this question.
kinetic energy= 1/2=m*(v)2
kinetic energy = speed
mechanical energy= (knietic+potential )energy
Answer:
H = 1/2 g t^2 no original vertical velocity
t = (2 * 2000 / 9.8)^1/2 = 20.2 s
Sx = 100 m/s * 20.2 s = 2020 m