Hello, i just need the right answer without explanation. Thank you Question 1 (1 point) A force, F, is applied to an obj

[answerhappygod]

Hello, i just need the right answer without explanation. Thank
you
Question 1 (1 point)
A force, F, is applied to an object with a displacement, Δd.
When does the equation W = FΔd equal the work done by the force on
the object?
Question 1 options:
always
when the force is in the same direction as the
displacement
when the force is perpendicular to the displacement
when the force is at an angle of 450 to the
displacement
Question 2 (1 point)
At a construction site, a constant force lifts a stack of wooden
boards, which has a mass of 500 kg, to a height of 10 m in 15 s.
The stack rises at a steady pace. How much power is needed to move
the stack to this height?
Question 2 options:
1.9 x 102 W
3.3 x 102 W
3.3 x 103 W
1.6 x 104 W
Question 3 (1 point)
Saved
A mover pushes a sofa across the floor of a van. The mover
applies 500 N of horizontal force to the sofa and pushes it 1.5 m.
The work done on the sofa by the mover is
Question 3 options:
285 J
396 J
570 J
750J
Question 4 (1 point)
A cart at the farmer's market is loaded with potatoes and pulled
at constant speed up a ramp to the top of a hill. If the mass of
the loaded cart is 5.0 kg and the top of the hill has a height of
0.55 m, then what is the potential energy of the loaded cart at the
top of the hill?
Question 4 options:
27 J
0.13 J
25 J
130 J
Question 6 (1 point)
Suppose that a spacecraft of mass 6.9 x 104 kg
at rest in space fires its rockets to achieve a speed of 5.2 x
103 m/s. How much work has the fuel done on the
spacecraft?
Question 6 options:
2.2 x 106 J
1.8 x 109 J
3.6 x 109 J
9.3 x 1011 J
Question 7 (1 point)
A 60 kg woman jogs up a hill in 25 s. Calculate the power the
woman exerts if the hill is 30 m high.
Question 7 options:
706W
750W
650W
380W
Question 8 (1 point)
A shopper pushes a loaded grocery cart with a force of 15 N. The
force makes an angle of 300 above the horizontal.
Determine the work done on the cart by the shopper as he pushes the
cart 14.2 m.
Question 8 options:
166J
213J
185J
225J
Question 9 (1 point)
A car of mass 1.5 x 105 kg is initially
travelling at a speed of 25 m/s. The driver then accelerates to a
speed of 40m/s over a distance of 0.20 km. Calculate the work done
on the car.
Question 9 options:
3.8x105 J
7.3x107 J
7.3x105 J
7.3x103 J
Question 10 (1 point)
A 86g golf ball on a tee is struck by a golf club. The golf ball
reaches a maximum height where its gravitational potential energy
has increased by 255 J from the tee. Determine the ball's maximum
height above the tee.
303m
34m
0.3m
30m