WorksheetsReview 2 - Forces and Motion
Total questions: 15
Worksheet time: 10mins
When an object is acted on by unbalanced forces, the object will always -
continue in the same direction
continue at the same speed
accelerate
will have no change in motion
What is the identity of an element that has 15 Protons, 16 Neutrons and 15 Electrons?
Sulfur
Nitrogen
Phosphorus
Berilyum
What part of the atom determines the chemical properties or reactivity?
Protons
Electrons
Valence Electrons
Energy levels
The picture above shows a horse traveling around a racetrack at a constant speed of 61 km/hr. At which point on the track is the horse accelerating?
At point A
At point B
At point C
The car is not accelerating
At which point is the velocity of the car the same?
Points A and B
Points A and C
Points B and C
The velocity is never the same
Based on the Law of Action and Reactions what arrow shows the direction of the Skateboard?
1
2
3
4
Which statement correctly describes the function of the airbag, using the laws of motion?
The mass of the crash test dummy is larger than the mass of the airbag.
Inertia keeps the crash test dummy in its seat when the car stops.
The unbalanced force of the crash test dummy hitting the airbag causes the airbag to explode.
The force of the dummy moving forward is equal to the force of the airbag.
F = ma
If you are pushing a 6.94 kg car at 3m/s2, how many newtons would be exerted on the car?
3.31 N
0.43 N
20.82 N
9.94 N
Which graph shows an object that is accelerating?
The diagram above shows a model of a molecule:
What is the formula of the chemical compound?
N8H6
N4H4
NH3
N2H
A 75N force (due East) is applied on an object. A second force of 75N (due South) is applied on the object. What will happen to the object's motion?
The object will continue to move east.
The object will move directly and consistently south.
The object will end up moving southeast.
The object will come to a complete stop.
The ___________ gives the chemical properties of an element
Protons
Neutrons
Valence Electrons
Symbols
The three vehicles shown below are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity.
The pickup truck has a changing velocity because the pickup truck —
can accelerate faster than the other two vehicles.
is traveling in the opposite direction from the other two vehicles
is traveling on a curve in the road.
needs a large amount of force to move.
2K + Br2 → 2KBr
How many atoms of potassium (K) are in the PRODUCT side of this equation?
1
2
3
4
