Physics Review Worksheet: Animals

Animals Review Worksheet

Adult Education Physics Animals Review Worksheet Advanced 25 Questions 6 Views

Classroom Worksheet

Physics Review Worksheet: Animals

Animals Review Worksheet

Name____________________________

Date________________

Score______ / 25

Grade: Adult Education

Subject: Physics

Topic: Animals

Time: 20 Minutes

Difficulty: Advanced

Questions: 25

Instructions:
Instructions: Answer all 25 questions. Show your work where calculations are needed. Use correct physics vocabulary and include units in your answers.

Skills Practiced:

Animals
Physics
Critical Thinking
Problem Solving

1Question

Define motion in physics and give one example involving an animal.

2Question

What is the difference between speed and velocity when describing an animal’s movement?

3Question

An ant travels 2 meters in 4 seconds. What is its average speed?

4Question

A fish swims 12 meters east in 6 seconds. What is its average velocity?

5Question

What is acceleration, and how might a cheetah demonstrate it?

6Question

A rabbit increases its speed from 2 m/s to 8 m/s in 3 seconds. What is its acceleration?

7Question

State Newton’s First Law of Motion in your own words and apply it to an animal in motion.

8Question

Why does a bird need to push air downward to fly upward?

9Question

A 10 kg turtle is moving at 3 m/s. What is its momentum?

10Question

Explain how friction affects an animal moving on land.

11Question

A 4 kg cat is pushed with a net force of 20 N. What is its acceleration?

12Question

Describe the difference between mass and weight for an animal.

13Question

A whale has a mass of 30,000 kg. What is its weight on Earth? Use g = 9.8 m/s².

14Question

Why is buoyancy important for fish and whales?

15Question

A bird rests on a branch. What forces are acting on the bird, and what is the net force?

16Question

A frog jumps upward. During the jump, what happens to its kinetic energy as it rises?

17Question

A 2 kg squirrel climbs to a height of 5 m. What is its gravitational potential energy? Use g = 9.8 m/s².

18Question

Explain how an animal can convert chemical energy into mechanical energy.

19Question

A seal swims through water and experiences drag. What is drag, and how does it affect the seal?

20Question

A 50 kg dog accelerates at 1.5 m/s². What net force acts on the dog?

21Question

A hawk flies horizontally at a constant speed of 20 m/s for 15 seconds. How far does it travel?

22Question

A cat jumps from a table and falls freely for 2 seconds, ignoring air resistance. What is its change in velocity? Use g = 9.8 m/s².

23Question

Why do larger animals usually need stronger bones and muscles than smaller animals?

24Question

A 6 kg dog running at 4 m/s catches a 2 kg ball moving toward it at 3 m/s. If the ball and dog move together after the catch, what is the combined momentum before the catch? Assume the dog and ball move in the same direction for the calculation.

25Question

A 6 kg dog running at 4 m/s catches a 2 kg ball moving opposite to the dog at 3 m/s. If the dog and ball move together after the catch, what is the total momentum before the catch and why is direction important?

Answer Key

#	Answer
1	Motion is the change in an object's position over time relative to a reference point. Example: a bird flying across a field.
2	Speed is how fast an animal moves. Velocity is speed in a specific direction.
3	Average speed = distance ÷ time = 2 m ÷ 4 s = 0.5 m/s.
4	Average velocity = displacement ÷ time = 12 m ÷ 6 s = 2 m/s east.
5	Acceleration is the rate at which velocity changes over time. A cheetah demonstrates acceleration when it speeds up rapidly while chasing prey.
6	Acceleration = (final velocity - initial velocity) ÷ time = (8 - 2) ÷ 3 = 2 m/s².
7	An object stays at rest or keeps moving at constant velocity unless acted on by a net external force. Example: a dog keeps sliding forward on ice until friction or another force stops it.
8	Because of Newton’s Third Law: when the bird pushes air downward, the air pushes the bird upward with an equal and opposite force.
9	Momentum = mass × velocity = 10 kg × 3 m/s = 30 kg·m/s.
10	Friction resists motion between surfaces. It helps animals walk or run without slipping, but it also slows movement and increases energy needed.
11	Acceleration = force ÷ mass = 20 N ÷ 4 kg = 5 m/s².
12	Mass is the amount of matter in the animal and stays the same everywhere. Weight is the gravitational force on the animal and can change with gravity.
13	Weight = mass × gravity = 30,000 kg × 9.8 m/s² = 294,000 N.
14	Buoyancy is the upward force from a fluid that helps counteract weight. It helps fish and whales stay afloat and move efficiently in water.
15	Gravity pulls downward and the branch exerts an upward support force. If the bird is resting, the forces are balanced and the net force is 0 N.
16	As it rises, kinetic energy decreases and gravitational potential energy increases.
17	GPE = mgh = 2 kg × 9.8 m/s² × 5 m = 98 J.
18	Animals use chemical energy from food in their muscles, converting it into mechanical energy for movement such as running, flying, or swimming.
19	Drag is a resistive force from a fluid that opposes motion. It slows the seal and requires more force to keep moving.
20	Net force = mass × acceleration = 50 kg × 1.5 m/s² = 75 N.
21	Distance = speed × time = 20 m/s × 15 s = 300 m.
22	Change in velocity = g × t = 9.8 m/s² × 2 s = 19.6 m/s downward.
23	Larger animals have greater mass, so they experience larger gravitational forces and often greater mechanical stress. Stronger bones and muscles are needed to support and move that mass.
24	Combined momentum = (6 kg × 4 m/s) + (2 kg × 3 m/s) = 24 + 6 = 30 kg·m/s.
25	If the dog’s direction is positive, total momentum = (6 × 4) + (2 × -3) = 24 - 6 = 18 kg·m/s in the dog’s direction. Direction is important because momentum is a vector, so opposite directions reduce the total.