Answer:
Explanation: it is Agree when the distance travels
Answer:
Mass of Little Sister = 44.17 kg
Explanation:
From Newton's second law of motion, the magnitude of force applied on the sled is given by the following formula:
F = ma
where,
F = Force Applied = 120 N
a = Acceleration = 2.3 m/s²
m = Mass of Sled + Mass of Little Sister = 8 kg + Mass of Little Sister
Therefore,
120 N = (2.3 m/s²)(8 kg + Mass of Little Sister)
(120 N)/(2.3 m/s²) = 8 kg + Mass of Little Sister
Mass of Little Sister = 52.17 kg - 8 kg
<u>Mass of Little Sister = 44.17 kg</u>
Answer:
6.32 m/s 18.43° northeast
Explanation:
We express the velocity of hawk as:
![v_{Hawk}=v_{balloon}+v_{HawkRelativetoBalloon}=6 x+2 y](https://tex.z-dn.net/?f=v_%7BHawk%7D%3Dv_%7Bballoon%7D%2Bv_%7BHawkRelativetoBalloon%7D%3D6%20x%2B2%20y)
We consider positive x towards east and positive y due north. So the magnitude is simply the square root of the square components:
≈![6.32 m/s](https://tex.z-dn.net/?f=6.32%20m%2Fs)
And the angle with respect to the east should be with:
![arctan(\frac{2}{6} )=18.43 \°](https://tex.z-dn.net/?f=arctan%28%5Cfrac%7B2%7D%7B6%7D%20%29%3D18.43%20%5C%C2%B0)
Answer:
c. The truck with greater speed
Explanation:
Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;
a. Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.
b. Kinetic energy (KE): it is an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
![K.E = \frac{1}{2}MV^{2}](https://tex.z-dn.net/?f=%20K.E%20%3D%20%5Cfrac%7B1%7D%7B2%7DMV%5E%7B2%7D)
Where;
K.E represents kinetic energy measured in Joules.
M represents mass measured in kilograms.
V represents speed or velocity measured in metres per seconds square.
From the above formula, we can deduce that the kinetic energy of an object is directly proportional to the square of the value of its velocity or speed.
Hence, the truck with greater speed would have a greater amount of kinetic energy.