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Friction opposes motion. As long as you define the direction in which the object is moving to be positive, the acceleration due to friction will be negative. If you think about it, you start out with positive speed and friction decreases the speed, so adding friction subtracted from the speed.
Note: Friction is counterintuitive when you start dealing with rolling without slipping. This answer doesn't address this.
What else can I help you with?
What information does the slope of a speed time graph provide?
The slope of a speed-time graph represents the acceleration of the object. A positive slope indicates acceleration in the positive direction, a negative slope indicates acceleration in the negative direction, and a zero slope indicates constant speed.
What are the kinematic equations with friction and how do they describe the motion of an object?
The kinematic equations with friction incorporate the effects of friction on the motion of an object. These equations describe the object's position, velocity, and acceleration as it moves with friction present. By accounting for friction, these equations provide a more accurate representation of how the object moves and how its motion changes over time.
Why is friction important to tar and rubber?
Friction is important for tar and rubber because it helps provide traction and grip. In the case of tires made of rubber, friction between the tire and the road surface allows for effective braking and acceleration. For tar used in road construction, friction helps prevent vehicles from skidding and provides stability.
What are the negative and positive aspects of battery technology?
Battery technology has both negative and positive aspects. On the negative side, batteries can be expensive, have limited lifespan, and can be harmful to the environment if not disposed of properly. On the positive side, batteries provide portable power, are rechargeable, and can store energy from renewable sources like solar and wind power.
How do tyres use friction?
Tyres use friction to grip the road surface and provide traction for acceleration, braking, and cornering. The friction between the tyre and the road helps transfer the vehicle's power to the ground and allows the driver to control the vehicle's movement. Proper tire tread design and rubber composition are important factors in maximizing friction and grip.
What information does the slope of a speed time graph provide?
The slope of a speed-time graph represents the acceleration of the object. A positive slope indicates acceleration in the positive direction, a negative slope indicates acceleration in the negative direction, and a zero slope indicates constant speed.
Is the leg positive or negative?
A leg is a limb, it is neither positive or negative.
The product of an odd number of negative factors is positive?
False.positive x positive = positivepositive x negative = negativenegative x positive = negativenegative x negative = positiveEvery 2 negative factors provides a positive result, so if there are an odd number of negative factors, there are 2n + 1 of them which means the 2n would provide a positive factor to be multiplied by the final negative factor which gives a negative result.
What are the kinematic equations with friction and how do they describe the motion of an object?
The kinematic equations with friction incorporate the effects of friction on the motion of an object. These equations describe the object's position, velocity, and acceleration as it moves with friction present. By accounting for friction, these equations provide a more accurate representation of how the object moves and how its motion changes over time.
Can Voltage dividers can provide only positive output voltages?
Voltage dividers can provide anything between VCC (the most positive voltage in the circuit) and VSS (the most negative voltage in the circuit). For example, if VCC =0 and VSS = -15, then the output voltage has to be negative. ========================
What is the acceleration a rocket that is 45kg with a thrusting force of 150N but friction is 25N?
Net force is 150N - 25N, or 125N. By Newton's Second Law of motion, acceleration is force divided by mass, so acceleration is 125N divided by 45kg, or 2.78 m s-2.Note: This is a "trite" example, because friction is dependent on velocity, but the question provided a fixed friction. Also, mass varies with time as fuel is consumed, but again the question did not provide those details.
Why is friction important to tar and rubber?
Friction is important for tar and rubber because it helps provide traction and grip. In the case of tires made of rubber, friction between the tire and the road surface allows for effective braking and acceleration. For tar used in road construction, friction helps prevent vehicles from skidding and provides stability.
A 67.7kg wooden sled being pulled on wet snow what is the calculation?
The force required to pull the sled can be calculated using the formula: Force = mass x acceleration. The acceleration due to friction on wet snow depends on factors such as the coefficient of friction and slope of the surface. More information would be needed to provide a specific calculation.
What are the negative and positive aspects of battery technology?
Battery technology has both negative and positive aspects. On the negative side, batteries can be expensive, have limited lifespan, and can be harmful to the environment if not disposed of properly. On the positive side, batteries provide portable power, are rechargeable, and can store energy from renewable sources like solar and wind power.
How do tyres use friction?
Tyres use friction to grip the road surface and provide traction for acceleration, braking, and cornering. The friction between the tyre and the road helps transfer the vehicle's power to the ground and allows the driver to control the vehicle's movement. Proper tire tread design and rubber composition are important factors in maximizing friction and grip.
Can you provide a comprehensive list of positive and negative emotions?
Positive emotions include happiness, joy, love, gratitude, contentment, excitement, and pride. Negative emotions include sadness, anger, fear, guilt, shame, jealousy, and anxiety.
Does xylene cyanol have a positive or negative charge?
Xylene cyanol is an anionic molecule, meaning it carries a negative charge. Its chemical structure includes sulfonic acid groups that provide the molecule with this negative charge.
