please help me asap!!!

In order to ride a bike up a hill with increasing speed—

the rider’s pedal force must be less than friction and the force of gravity
the rider’s pedal force must be equal to than friction and the force of gravity
the rider’s pedal force must be greater than friction and the force of gravity
It is impossible to ride up a hill with increasing speed.

What is the effect of the mass of an object on it’s friction threshold?

A roller coaster containing four cars is accelerating at 15 m/s2 before it comes to an abrupt stop at the end of the ride. The mass of one car is 200 kg. How much force was exerted on the roller coaster to bring it to a stop?

A - 60N
B - 800N
C - 3000N
D - 12000N

PLSSSSSSSS HELP WILL GIVE BRAINLYIST

Science: Look at the image and answer the question correctly.

In the demonstration by Cal’s teacher, the string represents the force that keeps the planet in orbit. Which statement BEST describes what would happen first if the string broke while swinging the ball during the demonstration?

A
The ball would continue orbiting.

B
The ball would immediately fall to the ground.

C
The ball would fly in a straight line away from the teacher.

D
The ball would move in a spiral getting farther away from the teacher.

Which of the following would most likely be an example of a mass-transit disaster?

a) an industrial accident
b) a bridge collapse
c) a hurricane with flooding
d) a nuclear power plant explosion

A heavy box is dropped from the roof of a small building and is traveling to the ground. Which claim about the forces acting on the box must be true?
Choose 1 answer:
A. There are no forces on the box.
B. There is no net force on the box.
C. There is a net force on the box.
D. There is not enough information.

HELPPPPPPP MEEEEEEEE PLEASEEEEEEEEE! How damper works and describes how you can test this solution.

Transfer of heat through conduction can occur in which of the following?
A. Solids

B. Liquids

C. Gases

D. All of the above

bonjour HELPPPP :) LOL

Suppose scientists discover two new moons.The average surface temperature of one of the moons is –180°C, but the temperature can reach 1500°C near active volcanoes.



Sulfur dioxide (SO2) has been detected on this moon. SO2 has a melting point of –72°C and a boiling point of –10°C. Where will SO2 be gas?



A.
In the center of active volcanoes


B.
Away from active volcanoes


C.
Near active volcanoes

List the events in order from OLDEST to YOUNGEST

Look at the image and answer the question correctly.

Can someone help me with this ASAP

Physics: Look at the image. Answer the question correctly!

Several objects were dropped from a balcony. Using the data below, determine which statements must be true regarding the rate of force of each falling object. Neglect (ignore) air resistance. Object Mass Diameter Height of drop Tennis Ball 0.06 kg 6.6 cm 5 m Baseball 0.15 kg 74 cm 5 m Bowling Ball 5 kg 21 cm 5 m Golf Ball 0.04 kg 4.3 cm 5 m Statement 1: All balls hit the ground at the same time Statement 2: All balls hit the ground with different forces Statement 3: The bowling ball hit the ground first and the tennis and golf ball hit the ground last Statement 4: It is not possible to tell how much force each ball hit the ground with

In which of the following situations will the ball have the greatest acceleration?



A golf ball with a mass of 0.045 kg is struck with a force of 1 N

A baseball with a mass of 0.142 kg is hit with a force of 5 N.

A soccer ball with a mass of 0.45 kg is kicked with a force of 20 N.

A bowling ball with a mass of 7.2 kg is thrown with a force of 60 N.

under which condition would an object on a desk start to move?
A. Unbalanced forces are applied to the object
b. Gravity pushes the object downward
c. inertia resists any change in its state of motion
d. balanced forces are applied to the object

If a person attempts to read their e-mail while they are riding the bus, they are _______.
a.
Combining tasks
b.
Multitasking
c.
Sequential tasking
d.
Cleaving tasks

help pleas!!!!

The food coloring spread _______ in the hot water. *


Faster

Slower

Which of the following is an example of an approximately neutral pH?



baking soda


lemon juice


hand soap


pure water

According to Newton’s second law of motion, the relationship between an object's mass (m), its acceleration (a), and the applied force (F) is F = ma. How does this law apply to the sport of bowling?

When the pins are correctly aligned, their mass and acceleration will keep the ball from going into the gutter.

When the bowling ball is rolling down the lane, the mass of the ball on the floor makes the pins become unstable, allowing the acceleration of the ball to knock down the pins.

When the bowling ball is rolled with a force, this accelerates the ball. That acceleration, when combined with the mass of the ball, produces a force that knocks down the pins

When the bowling ball hits the pins, the ball has a mass, so it will exert acceleration on the pins and knock them down.

In order to ride a bike up a hill with increasing speed—

the rider’s pedal force must be less than friction and the force of gravity
the rider’s pedal force must be equal to than friction and the force of gravity
the rider’s pedal force must be greater than friction and the force of gravity
It is impossible to ride up a hill with increasing speed.
WILL MARK BRAINLIEST