Answer:
PARABOLIC, EARTH, VERTICAL, INERTIAL ang PHYSICAL LAWS
Explanation:
In this exercise you are asked to complete the missing words.
When the steel ball falls on the constant speed car, it follows a PARABOLIC path in the reference frame fixed to EARTH, but a VERTICAL straight line in the reference frame of the constant speed car. Without a fixed frame of reference, you cannot tell whether or not you are in an INERTIAL frame of reference. All frames of reference that move at constant speed relative to each other are PHYSICAL LAWS__equivilent__.
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Acceleration is the rate of change of the velocity of a moving object. To determine the speed the object has at a certain time, we need to determine the acceleration first by dividing the speed with the time given. We do as follows:
acceleration = 4.9 m/s / 5.1 s = 0.96 m/s^2
To determine the velocity after 7.1 s, we multiply 7.1 s to the acceleration.
speed or velocity = 0.96 x 7.1 = 6.52 m/s
Answer:0.27*10^{6} (m)
Explanation:
with a wave we know that speed= wavelenght* frecuency so
wavelenght= 3*10^{7} / 109 = 0.27*10^{6} (m)
