Answer:
accelerate in the direction of the force
Explanation:
A small mailbag is released from a helicopter that is descending steadily at 2.00 m/s. After 3.00 s.
Required:
a. What is the speed of the mailbag?
b. How far is it below the helicopter?
Answer:
Explanation:
Initial velocity of mailbag u = 2 m/s
acceleration downwards a = g = 9.8 m/s²
time t = 3 s
a ) final velocity v = ?
v = u + at
= 2 + 9.8 x 3
= 31.4 m /s
b )
s = ut + 1/2 g t²
s is relative displacement of mailbag
u = relative initial velocity of mailbag = 0
relative acceleration = g = 9.8 m /s²
time t = 3 s
s = 0 + 1/2 x 9.8 x 3²
= 44.1 m
relative displacement of mailbag = 44.1 m .
If electrical current is moving through a horizontal wire toward your face, what direction is the induced magnetic field?
a. clockwise
b. straight left
c. straight right
d. counter clockwise
Answer:(b)
Explanation:
Given
Electric current flowing through the horizontal wire towards the observer's face.
The direction of the magnetic field is given by the right-hand thumb rule, i.e. place the thumb in the direction of current and the wrapping of fingers will give the direction of the magnetic field
the direction of the magnetic field will be counterclockwise as observed by an observer.
