A 11 kg cart accelerated at .2 m/s2 to reach a speed of 5 m/s along the track. During this acceleration, what was the net force to the nearest thousands applied on the cart?
Question 24
24.
A 40 kg object is moved with a force of 18 N. What is the acceleration of the object?
Question 25
25.
A car travels a distance of 120 Km in 4 hours. what is its speed in kilometers per hours?
1
1
1
Question 29
29.
Which subatomic particle defines the identity of an element?
Nucleus
Electron
Neutron
Proton
How many carbon atoms in NaCHCO3
1
2
3
4
How many Hydrogen atoms in NaCHCO3
3
2
1
Question 7
7.
Question 8
8.
Question 9
9.
Question 10
10.
Question 11
11.
Question 12
12.
Question 13
13.
Question 14
14.
Question 15
15.
Question 16
16.
Which observation of this process provides evidence of a chemical reaction?
Hot water heated the aluminum foil
The liquid solution changed color.
The pan was lined with aluminum foil.
The hot water cooled.
Fireworks demonstrations are examples of a...
physical change
chemical change
Identify the following as speed velocity or acceleration
Car turning left then right _________
Speed
velocity
acceleration
Identify the following as speed velocity or acceleration
Car moving north with a speed of 70 m/hr
Speed
velocity
acceleration
choose an object that is accelerating
A train halfway from New York to Houston
a bike turining left then right
a bike moving 30 m/hr
Select the correct statement about velocity . choose 2
Velocity is the change in distance over time
Speed is the change in velocity
Velocity is the speed and direction
velocity is the change in speed or direction
velocity has direction associated with it while speed is not.
Question 26
26.
Question 27
27.
Question 28
28.
1.Each cart below is pushed across a room with the same amount of force. Which cart will result in the greatest acceleration?
A. A 10 kg cart being pushed with a 100 N force.
B. A 20 kg box being pushed with a 100 N force.
C. A 30 kg box being pushed with a 100 N force.
D. A 40 kg cart being pushed with a 100 N force.
A person jogging at a constant speed.
balanced force
unbalanced force
A car accelerating at a green light
balanced force
unbalanced force
pushing a lawnmower across the yard
balanced force
unbalanced force
a cookie sitting on a plate
balanced force
unbalanced force
slowing down to a stop at a red light
balanced force
unbalanced force
A bowling ball knocking over pins
balanced force
unbalanced force
a book sitting on a shelf
balanced force
unbalanced force
a linebacker tackling a running bac
balanced force
unbalanced force
a person sitting on a chair
balanced force
unbalanced force
a plane flying at a constant speed
balanced force
unbalanced force
A magician pulls out the tablecloth from under the dishes and they do not move.
A
B
C
D
which of these explain why the coin fell straight down into the cup instead of remaining on the index card?
A
B
C
D
two cars with different masses travel at the same speed down a hill towards a stop sign. what will happen when both cars apply brakes at the same time to stop.
