Answer:any speed greater than 4.22 m/s
Explanation:
Given
Length of substation =24.5 m
speed of escalator =2 m/s
Time to cross the escalator is 11 s
let v be the speed of boy
Therefore minimum speed to match the record time is
24.5=(v-2)11
v-2=2.22
v=4.22 m/s
Therefore a speed greater than 4.22 m/s is required to beat the record
i just took the test on edg enuity it was B.The mass of the rocket decreases as fuel is burned, so the acceleration increases.
Explanation:
When the air resistance on an object which is also called the drag force, equals to the object's weight (N) (Don't get confused here, Weight here refers to the force exerted by an object. Mass is measure in kgs. So therefore the Weight will be measured in Newtons or N), it reaches terminal velocity where the object will have the acceleration of 0 and will fall at constant velocity.
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Answer:
both an electric field and a magnetic field
Explanation: