Q 16. The energy is 308.7 J.
Q 17. The energy is 896000 J.
Step-by-step explanation:
Q 16. Given,
Mass (m) of the carriage and baby = 1.5 kg
Height (h) = 21 m
To find the energy.
We will find the potential energy as it rests at the top.
Formula
Potential energy = mgh where g be the gravitational force of the earth = 9.8m/s²
So,
Energy = 1.5×9.8×21 J
= 308.7 J.
Hence,
The energy is 308.7 J.
Q 17. Given,
Mass (m) = 1120 kg
Speed (v) = 40 m/s
To find out the energy.
We will find out the kinetic energy as the car is in motion.
Formula
Kinetic energy = 
mv²
So,
Energy = ×1120×40² J
= 896000 J
Hence,
The energy is 896000 J.
Answer:
7/20
Step-by-step explanation:
Just reduce by dividing by the GCF
The answer is B. The dotted line tells you that the equations will be "greater than" or "less than". A solid line would indicate that it would be "greater than or equal to" or "less than or equal to". Then, since C and D can be eliminated, you look at which equations graphs the line. The answer must be B because the y-intercept is -1 (remember that the equation of a line is y = mx + b, where b is the y-intercept).
Answer: Larry thought of the number 14
Step-by-step explanation:
Let the number be represented by x
Such that when added with 1 becomes x+1
Multiplied by 2 becomes 2(x+1)
divided by 3 gives 2(x+1)/3
Upon subtraction with 4, we have
2(x+1)/3 -4=6 as the equation
Solving
2(x+1)/3 -4=6
2(x+1)/3=6+4
2(x+1)/3=10
2(x+1)=3x10
2(x+1)=30
2x+2=30
2x=30-2
2x=28
x=28/2
x=14
Answer:
5/4
5/4 = 1 1/4
It does not belong here
Step-by-step explanation:
