A stressed out Mom just purchased a cup of Starbucks coffee. The bus she is riding on to work goes around a sharp curve. Even though she holds the cup still, the coffee still splashes out. Which word explains this phenomenon?
The phenomenon that explains the coffee splashing out of the cup is called "inertia."
Consider the situations below. Which of these is the BEST example of Newton's 1st Law (inertia)? (1 point)
a. A tennis player throws the tennis ball into the air for a serve and the ball falls to the ground.
b. A bird takes flight from the ground.
c. You go down a steep hill in a sled and it feels like your stomach is going up into your throat.
d. Tom uses a cane to walk across the road.
The best example of Newton's 1st Law (inertia) among the given situations is (d) Tom using a cane to walk across the road.
A roller coaster begins at the top of a hill. If it accelerates at the rate of 2 m/s and has a mass of 2000 kg, what net force is acting on it? (Force=mass x acceleration)(1 point)
To calculate the net force acting on the roller coaster, we can use the formula Force = mass x acceleration. Given that the acceleration is 2 m/s² and the mass is 2000 kg, we can substitute these values into the formula:
Force = 2000 kg x 2 m/s²
Force = 4000 kg*m/s²
Therefore, the net force acting on the roller coaster is 4000 kg*m/s².
A roller coaster begins at the top of a hill. If it accelerates at the rate of 2 m/s and has a mass of 2000 kg, what net force is acting on it? how many newtons is it? (Force=mass x acceleration)(1 point)
To find the net force in newtons (N), we can use the formula Force = mass x acceleration. Given that the acceleration is 2 m/s² and the mass is 2000 kg, we can substitute these values into the formula:
Force = 2000 kg x 2 m/s²
Force = 4000 kg*m/s²
Therefore, the net force acting on the roller coaster is 4000 kg*m/s², which is equivalent to 4000 Newtons (N).
Matt is walking at 1.25 miles per hour to the east. Jaime is walking at 1.25 miles per hour to the south. Which statement describes the movement of Matt and Jaime?(1 point)
The movement of Matt and Jaime can be described as:
Matt is moving horizontally to the east at a speed of 1.25 miles per hour.
Jaime is moving vertically to the south at a speed of 1.25 miles per hour.
Therefore, Matt's movement is along the x-axis (east-west direction), and Jaime's movement is along the y-axis (north-south direction).
Matt is walking at 1.25 miles per hour to the east. Jaime is walking at 1.25 miles per hour to the south. Which statement describes the movement of Matt and Jaime?do they have the same velocity (1 point)
No, Matt and Jaime do not have the same velocity. Velocity is a vector quantity that includes both magnitude (speed) and direction. While both Matt and Jaime have the same speed of 1.25 miles per hour, their directions are different. Matt is moving to the east, while Jaime is moving to the south. Since their directions are different, their velocities are also different. Therefore, they do not have the same velocity.
Matt is walking at 1.25 miles per hour to the east. Jaime is walking at 1.25 miles per hour to the south. Which statement describes the movement of Matt and Jaime? (1 point)
• They have different speeds but the same velocity.
• They have different speeds and different velocities.
They have the same speed and the same velocity.
• They have the same speed and the same velocity.
• They have the same speed but different velocities.
Matt and Jaime have different speeds and different velocities.
Explain how.
Apologies for the incorrect response provided earlier.
Matt is walking to the east with a speed of 1.25 miles per hour, which means he is moving horizontally along the x-axis. This movement can be represented by a velocity vector pointing towards the east. The velocity vector has a magnitude (speed) of 1.25 miles per hour in the east direction.
On the other hand, Jaime is walking to the south with a speed of 1.25 miles per hour, which means she is moving vertically along the y-axis. This movement can be represented by a velocity vector pointing towards the south. The velocity vector has a magnitude (speed) of 1.25 miles per hour in the south direction.
Since the directions of their velocities are different (one is east and the other is south) despite having the same magnitude (speed), their velocities are different as well. Therefore, Matt and Jaime have different speeds and different velocities.