Answer:
Motion with constant velocity of magnitude 1 m/s (uniform motion) for 4 seconds in a positive direction and then for 2 seconds uniform motion with constant velocity of magnitude 3 m/s in reverse direction .
Explanation:
The graph shows a constant velocity of 1 m/s for 4 seconds in the positive direction. After that, between 4 seconds and 6 seconds, the object reverses its motion with constant velocity of magnitude 3m/s.
Answer:
She can make have 30 jars with raspberries in them with 50 left over.
Explanation:
1,700 divided by 55
30 equally
but 50 left over
This means that she can make have 30 jars with raspberries in them with 50 left over.
If force is applied at 30 degree with the horizontal
then first we will find the components of force in two directions
now we can find normal force by balancing the forces in Y direction
now since block is moving with constant speed
so here forces along horizontal plane will be balanced also
Now the weight of the box is defined as
now plug in all values
Answer:
The mechanical energy of the satellite is about 12 Gigajoules
Explanation:
The total mechanical energy is the sum of the kinetic and potential energy:
While we can determine the potential energy from the given values (height above earth's surface), to calculate the kinetic energy the velocity of the satellite needs to be determined first.
The formula for orbital velocity is:
with G the gravitational constant, m_E the mass of the Earth, and r the satellite distance measured from the center of the Earth:
This velocity points in the direction of the tangent of the orbit.
Now the kinetic and total mechanical energy can be calculated:
The mechanical energy of the satellite is about 12 Gigajoules
Explanation:
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