Sally is pushing a shopping cart with a force of 20 N. Because the wheels are stuck, the friction caused by the ground is exerti
1 answer:
The net force on the shopping cart is 12 N to the right.
This is a question related to Newton's Laws. It can be solved by using a Free body diagram, which shows all the forces acting on the object. There are 4 forces acting on the object:
- Gravity (g) pointing down.
- Normal (N) pointing up.
- Push force by Sally (Fp) pointing right.
- Friction force (Ff) pointing left.
Forces (1) and (2) cancel each other because they have the same magnitude, and the overall force is given by the addition of forces (3) and (4)
The positive value indicates that the shopping cart is moving to the right.
Have a nice day!
#LearnwithBrainly
You might be interested in
Answer:
(a). The magnitude and direction of the velocity of the otters after collision is 1.35 m/s toward left.
(b). The mechanical energy dissipates during this play is 226.98 J.
Explanation:
Given that,
Mass of one otter = 8.50 kg
Speed = 6.00 m/s
Mass of other = 5.75 kg
Speed = 5.50 m/s
(a). We need to calculate the magnitude and direction of the velocity of these free-spirited otters right after they collide
Using conservation of momentum
Put the value into the formula
Negative sign shows the direction of motion of the object after collision is toward left.
(b). We need to calculate the initial kinetic energy
Using formula of kinetic energy
Put the value into the formula
We need to calculate the final kinetic energy
Using formula of kinetic energy
Put the value into the formula
We need to calculate the mechanical energy dissipates during this play
Using formula of loss of mechanical energy
Put the value into the formula
Negative sign shows the loss of mechanical energy
Hence, (a). The magnitude and direction of the velocity of the otters after collision is 1.35 m/s toward left.
(b). The mechanical energy dissipates during this play is 226.98 J.
Answer:
kick 1 has travelled 15 + 15 = 30 yards before hitting the ground
so kick 2 travels 25 + 25 = 50 yards before hitting the ground
first kick reached 8 yards and 2nd kick reached 20 yards
Explanation:
1st kick travelled 15 yards to reach maximum height of 8 yards
so, it has travelled 15 + 15 = 30 yards before hitting the ground
2nd kick is given by the equation
y (x) = -0.032x(x - 50)
we know that maximum height occurs is given as
and maximum height is
y = 20
so kick 2 travels 25 + 25 = 50 yards before hitting the ground
first kick reached 8 yards and 2nd kick reached 20 yards